| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 24983 | 284 | 7832 |
| 1997 | 26553 | 345 | 8585 |
| 1998 | 27417 | 577 | 9362 |
| 1999 | 28199 | 541 | 9309 |
| 2000 | 30571 | 640 | 10952 |
| 2001 | 31125 | 962 | 10274 |
| 2002 | 34695 | 801 | 11066 |
| 2003 | 36238 | 949 | 11443 |
| 2004 | 39211 | 1665 | 12363 |
| 2005 | 42504 | 1667 | 13940 |
| 2006 | 45955 | 2906 | 15523 |
| 2007 | 43954 | 3211 | 16078 |
| 2008 | 46121 | 6145 | 15841 |
| 2009 | 54522 | 6681 | 17976 |
| 2010 | 58890 | 10199 | 19590 |
| 2011 | 62087 | 12029 | 20960 |
| 2012 | 61322 | 8710 | 22072 |
| 2013 | 63836 | 8776 | 23552 |
| 2014 | 67184 | 10994 | 23480 |
| 2015 | 71624 | 13002 | 24835 |
| 2016 | 74237 | 14882 | 26114 |
| 2017 | 75702 | 15361 | 27174 |
| 2018 | 79822 | 19037 | 29075 |
| 2019 | 79945 | 25351 | 29981 |
| 2020 | 83913 | 30473 | 32026 |
| 2021 | 85046 | 33378 | 32429 |
| 2022 | 84576 | 42169 | 32269 |
| 2023 | 84619 | 46103 | 32972 |
| 2024 | 87289 | 51547 | 36156 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 24152 | 276 | 7417 |
| 1997 | 25743 | 341 | 8194 |
| 1998 | 26525 | 575 | 8964 |
| 1999 | 27184 | 538 | 8843 |
| 2000 | 29519 | 635 | 10391 |
| 2001 | 29966 | 957 | 9674 |
| 2002 | 33081 | 785 | 10342 |
| 2003 | 34598 | 933 | 10769 |
| 2004 | 37444 | 1648 | 11629 |
| 2005 | 40364 | 1645 | 12982 |
| 2006 | 43180 | 2772 | 14431 |
| 2007 | 41070 | 3175 | 14895 |
| 2008 | 43438 | 6093 | 14709 |
| 2009 | 51161 | 6611 | 16671 |
| 2010 | 55122 | 10121 | 18168 |
| 2011 | 57868 | 11894 | 19267 |
| 2012 | 57394 | 8533 | 20346 |
| 2013 | 59634 | 8613 | 21560 |
| 2014 | 62114 | 10681 | 21324 |
| 2015 | 66307 | 12544 | 22369 |
| 2016 | 67521 | 14334 | 23293 |
| 2017 | 68803 | 14737 | 24072 |
| 2018 | 72123 | 18298 | 25567 |
| 2019 | 73072 | 24480 | 26588 |
| 2020 | 76794 | 29407 | 28288 |
| 2021 | 78211 | 32443 | 28831 |
| 2022 | 77764 | 40971 | 28788 |
| 2023 | 76987 | 44749 | 29321 |
| 2024 | 80626 | 50251 | 32796 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 831 | 8 | 415 |
| 1997 | 810 | 4 | 391 |
| 1998 | 892 | 2 | 398 |
| 1999 | 1015 | 3 | 466 |
| 2000 | 1052 | 5 | 561 |
| 2001 | 1159 | 5 | 600 |
| 2002 | 1614 | 16 | 724 |
| 2003 | 1640 | 16 | 674 |
| 2004 | 1767 | 17 | 734 |
| 2005 | 2140 | 22 | 958 |
| 2006 | 2775 | 134 | 1092 |
| 2007 | 2884 | 36 | 1183 |
| 2008 | 2683 | 52 | 1132 |
| 2009 | 3361 | 70 | 1305 |
| 2010 | 3768 | 78 | 1422 |
| 2011 | 4219 | 135 | 1693 |
| 2012 | 3928 | 177 | 1726 |
| 2013 | 4202 | 163 | 1992 |
| 2014 | 5070 | 313 | 2156 |
| 2015 | 5317 | 458 | 2466 |
| 2016 | 6716 | 548 | 2821 |
| 2017 | 6899 | 624 | 3102 |
| 2018 | 7699 | 739 | 3508 |
| 2019 | 6873 | 871 | 3393 |
| 2020 | 7119 | 1066 | 3738 |
| 2021 | 6835 | 935 | 3598 |
| 2022 | 6812 | 1198 | 3481 |
| 2023 | 7632 | 1354 | 3651 |
| 2024 | 6663 | 1296 | 3360 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 20891 | 214 | 6529 |
| 1997 | 22653 | 271 | 7313 |
| 1998 | 23545 | 380 | 7991 |
| 1999 | 24312 | 421 | 8028 |
| 2000 | 26482 | 465 | 9727 |
| 2001 | 27124 | 661 | 8978 |
| 2002 | 30212 | 679 | 9692 |
| 2003 | 31381 | 755 | 10178 |
| 2004 | 33904 | 1261 | 11062 |
| 2005 | 36624 | 1292 | 12306 |
| 2006 | 39267 | 2085 | 13519 |
| 2007 | 37339 | 2511 | 14162 |
| 2008 | 39293 | 4211 | 13880 |
| 2009 | 46362 | 4359 | 15562 |
| 2010 | 50388 | 6893 | 17233 |
| 2011 | 52088 | 7593 | 18327 |
| 2012 | 52838 | 6152 | 19404 |
| 2013 | 54715 | 6544 | 20771 |
| 2014 | 57593 | 8131 | 20761 |
| 2015 | 61326 | 9378 | 21619 |
| 2016 | 63381 | 12035 | 22878 |
| 2017 | 65016 | 12925 | 23693 |
| 2018 | 68439 | 15976 | 25256 |
| 2019 | 68428 | 21196 | 26045 |
| 2020 | 70905 | 24954 | 27394 |
| 2021 | 69651 | 27012 | 27100 |
| 2022 | 63964 | 33580 | 25465 |
| 2023 | 53740 | 34667 | 22438 |
| 2024 | 27923 | 20639 | 13344 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 4092 | 70 | 1303 |
| 1997 | 3900 | 74 | 1272 |
| 1998 | 3872 | 197 | 1371 |
| 1999 | 3887 | 120 | 1281 |
| 2000 | 4089 | 175 | 1225 |
| 2001 | 4001 | 301 | 1296 |
| 2002 | 4483 | 122 | 1374 |
| 2003 | 4857 | 194 | 1265 |
| 2004 | 5307 | 404 | 1301 |
| 2005 | 5880 | 375 | 1634 |
| 2006 | 6688 | 821 | 2004 |
| 2007 | 6615 | 700 | 1916 |
| 2008 | 6828 | 1934 | 1961 |
| 2009 | 8160 | 2322 | 2414 |
| 2010 | 8502 | 3306 | 2357 |
| 2011 | 9999 | 4436 | 2633 |
| 2012 | 8484 | 2558 | 2668 |
| 2013 | 9121 | 2232 | 2781 |
| 2014 | 9591 | 2863 | 2719 |
| 2015 | 10298 | 3624 | 3216 |
| 2016 | 10856 | 2847 | 3236 |
| 2017 | 10686 | 2436 | 3481 |
| 2018 | 11383 | 3061 | 3819 |
| 2019 | 11517 | 4155 | 3936 |
| 2020 | 13008 | 5519 | 4632 |
| 2021 | 15395 | 6366 | 5329 |
| 2022 | 20612 | 8589 | 6804 |
| 2023 | 30879 | 11436 | 10534 |
| 2024 | 59366 | 30908 | 22812 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 817161 | 3961 | 187176 |
| 1997 | 889799 | 6924 | 218190 |
| 1998 | 962782 | 7515 | 247729 |
| 1999 | 1095707 | 14159 | 285548 |
| 2000 | 1331223 | 14175 | 394514 |
| 2001 | 1289917 | 15255 | 366608 |
| 2002 | 1499480 | 18729 | 395529 |
| 2003 | 1534761 | 21852 | 435722 |
| 2004 | 1623561 | 40489 | 513494 |
| 2005 | 1668194 | 36495 | 551558 |
| 2006 | 1736972 | 44656 | 585276 |
| 2007 | 1582302 | 54180 | 587187 |
| 2008 | 1521590 | 66300 | 530043 |
| 2009 | 1646608 | 77087 | 557170 |
| 2010 | 1760052 | 117006 | 593765 |
| 2011 | 1670799 | 129413 | 590589 |
| 2012 | 1591070 | 132854 | 589597 |
| 2013 | 1574104 | 152604 | 608070 |
| 2014 | 1541522 | 191347 | 592948 |
| 2015 | 1527258 | 213541 | 594884 |
| 2016 | 1464673 | 276610 | 582683 |
| 2017 | 1436228 | 300814 | 565326 |
| 2018 | 1382348 | 357503 | 582138 |
| 2019 | 1220811 | 420491 | 526549 |
| 2020 | 1173196 | 499387 | 502700 |
| 2021 | 839712 | 428730 | 382775 |
| 2022 | 503379 | 371595 | 239866 |
| 2023 | 262538 | 229921 | 128565 |
| 2024 | 66401 | 61710 | 37035 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 393816 | 2259 | 125924 |
| 1997 | 444867 | 4145 | 148198 |
| 1998 | 477131 | 4781 | 169296 |
| 1999 | 563898 | 8244 | 197673 |
| 2000 | 687375 | 6654 | 277213 |
| 2001 | 664447 | 8434 | 259191 |
| 2002 | 790976 | 9707 | 273506 |
| 2003 | 815748 | 11643 | 305484 |
| 2004 | 858333 | 24098 | 368261 |
| 2005 | 881196 | 20394 | 391442 |
| 2006 | 918377 | 23018 | 415984 |
| 2007 | 837037 | 28646 | 420359 |
| 2008 | 808274 | 35764 | 378948 |
| 2009 | 860158 | 41503 | 396183 |
| 2010 | 943113 | 59926 | 425746 |
| 2011 | 884299 | 70956 | 422288 |
| 2012 | 843592 | 65638 | 422170 |
| 2013 | 842088 | 77611 | 435749 |
| 2014 | 825528 | 88494 | 433657 |
| 2015 | 829210 | 101689 | 438432 |
| 2016 | 801108 | 132161 | 430436 |
| 2017 | 804547 | 136198 | 418852 |
| 2018 | 784425 | 156950 | 437937 |
| 2019 | 703137 | 183720 | 396721 |
| 2020 | 687429 | 220363 | 384744 |
| 2021 | 488729 | 171093 | 290013 |
| 2022 | 284641 | 136116 | 179262 |
| 2023 | 150212 | 85407 | 95426 |
| 2024 | 36002 | 22121 | 26267 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 423345 | 1702 | 61252 |
| 1997 | 444932 | 2779 | 69992 |
| 1998 | 485651 | 2734 | 78433 |
| 1999 | 531809 | 5915 | 87875 |
| 2000 | 643848 | 7521 | 117301 |
| 2001 | 625470 | 6821 | 107417 |
| 2002 | 708504 | 9022 | 122023 |
| 2003 | 719013 | 10209 | 130238 |
| 2004 | 765228 | 16391 | 145233 |
| 2005 | 786998 | 16101 | 160116 |
| 2006 | 818595 | 21638 | 169292 |
| 2007 | 745265 | 25534 | 166828 |
| 2008 | 713316 | 30536 | 151095 |
| 2009 | 786450 | 35584 | 160987 |
| 2010 | 816939 | 57080 | 168019 |
| 2011 | 786500 | 58457 | 168301 |
| 2012 | 747478 | 67216 | 167427 |
| 2013 | 732016 | 74993 | 172321 |
| 2014 | 715994 | 102853 | 159291 |
| 2015 | 698048 | 111852 | 156452 |
| 2016 | 663565 | 144449 | 152247 |
| 2017 | 631681 | 164616 | 146474 |
| 2018 | 597923 | 200553 | 144201 |
| 2019 | 517674 | 236771 | 129828 |
| 2020 | 485767 | 279024 | 117956 |
| 2021 | 350983 | 257637 | 92762 |
| 2022 | 218738 | 235479 | 60604 |
| 2023 | 112326 | 144514 | 33139 |
| 2024 | 30399 | 39589 | 10768 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 15.06 | 27.82 | 13.94 |
| 1997 | 7.96 | 29.57 | 11.68 |
| 1998 | 8.43 | 24.61 | 11.62 |
| 1999 | 7.77 | 26.99 | 11.85 |
| 2000 | 8.52 | 27.19 | 12.58 |
| 2001 | 8.23 | 19.54 | 13.31 |
| 2002 | 8.94 | 25.34 | 13.61 |
| 2003 | 10.08 | 31.30 | 16.22 |
| 2004 | 11.90 | 27.69 | 18.36 |
| 2005 | 12.50 | 27.53 | 19.54 |
| 2006 | 13.81 | 23.02 | 20.41 |
| 2007 | 15.37 | 23.33 | 21.00 |
| 2008 | 21.39 | 19.19 | 25.73 |
| 2009 | 13.75 | 19.14 | 22.87 |
| 2010 | 13.28 | 15.85 | 22.92 |
| 2011 | 13.75 | 15.63 | 22.89 |
| 2012 | 14.56 | 23.71 | 23.71 |
| 2013 | 15.66 | 26.83 | 26.03 |
| 2014 | 16.90 | 26.82 | 29.60 |
| 2015 | 17.72 | 27.99 | 31.08 |
| 2016 | 18.54 | 30.18 | 32.71 |
| 2017 | 19.51 | 32.37 | 33.94 |
| 2018 | 21.18 | 33.53 | 35.84 |
| 2019 | 22.54 | 30.54 | 37.48 |
| 2020 | 23.57 | 30.33 | 40.24 |
| 2021 | 24.69 | 29.73 | 43.04 |
| 2022 | 25.26 | 27.71 | 44.45 |
| 2023 | 25.82 | 27.79 | 46.48 |
| 2024 | 26.46 | 29.41 | 47.13 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 9.35 | 9.15 | 6.44 |
| 1997 | 9.64 | 8.70 | 7.44 |
| 1998 | 10.75 | 9.71 | 8.82 |
| 1999 | 10.60 | 18.11 | 8.55 |
| 2000 | 10.99 | 20.00 | 10.33 |
| 2001 | 10.52 | 17.98 | 11.55 |
| 2002 | 11.65 | 18.60 | 12.30 |
| 2003 | 12.69 | 18.34 | 13.96 |
| 2004 | 13.08 | 18.98 | 14.66 |
| 2005 | 14.11 | 22.98 | 16.34 |
| 2006 | 15.34 | 13.76 | 17.21 |
| 2007 | 16.09 | 15.23 | 19.14 |
| 2008 | 17.86 | 12.47 | 21.68 |
| 2009 | 20.35 | 14.83 | 23.75 |
| 2010 | 20.70 | 13.67 | 23.46 |
| 2011 | 20.84 | 18.11 | 24.58 |
| 2012 | 21.79 | 19.02 | 25.41 |
| 2013 | 22.49 | 22.00 | 29.26 |
| 2014 | 24.64 | 23.63 | 38.99 |
| 2015 | 26.32 | 24.40 | 46.56 |
| 2016 | 29.20 | 26.99 | 57.42 |
| 2017 | 30.64 | 34.05 | 63.80 |
| 2018 | 33.94 | 38.97 | 66.30 |
| 2019 | 37.12 | 40.56 | 67.00 |
| 2020 | 38.92 | 40.63 | 68.28 |
| 2021 | 41.42 | 42.34 | 72.87 |
| 2022 | 42.11 | 49.03 | 74.54 |
| 2023 | 43.62 | 52.12 | 76.76 |
| 2024 | 37.24 | 45.13 | 74.12 |