| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 23662 | 1076 | 7255 |
| 1997 | 24785 | 1292 | 7441 |
| 1998 | 24087 | 1645 | 7720 |
| 1999 | 23977 | 1788 | 7763 |
| 2000 | 24372 | 1797 | 7805 |
| 2001 | 24793 | 2385 | 7326 |
| 2002 | 26411 | 2728 | 7650 |
| 2003 | 29103 | 3650 | 7910 |
| 2004 | 29890 | 4919 | 8112 |
| 2005 | 30895 | 8218 | 8242 |
| 2006 | 31972 | 9792 | 8696 |
| 2007 | 33330 | 11654 | 9125 |
| 2008 | 34461 | 13238 | 9097 |
| 2009 | 34303 | 14738 | 9400 |
| 2010 | 35379 | 17130 | 9377 |
| 2011 | 35518 | 19833 | 9626 |
| 2012 | 37365 | 19988 | 9823 |
| 2013 | 37067 | 24473 | 10193 |
| 2014 | 38249 | 26896 | 10512 |
| 2015 | 39674 | 29564 | 11158 |
| 2016 | 40011 | 33158 | 11147 |
| 2017 | 40884 | 37977 | 11299 |
| 2018 | 42236 | 42368 | 11876 |
| 2019 | 43684 | 56444 | 12304 |
| 2020 | 45138 | 63366 | 12903 |
| 2021 | 48185 | 72321 | 14330 |
| 2022 | 44025 | 89149 | 13041 |
| 2023 | 42401 | 93073 | 12466 |
| 2024 | 42102 | 107104 | 12772 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 23522 | 1074 | 7182 |
| 1997 | 24594 | 1290 | 7354 |
| 1998 | 23814 | 1643 | 7624 |
| 1999 | 23538 | 1786 | 7555 |
| 2000 | 23919 | 1792 | 7606 |
| 2001 | 24333 | 2377 | 7139 |
| 2002 | 25820 | 2721 | 7449 |
| 2003 | 28518 | 3640 | 7737 |
| 2004 | 29339 | 4908 | 7889 |
| 2005 | 30196 | 8203 | 7858 |
| 2006 | 31163 | 9763 | 8348 |
| 2007 | 32410 | 11621 | 8723 |
| 2008 | 33421 | 13151 | 8726 |
| 2009 | 33232 | 14632 | 8996 |
| 2010 | 34198 | 17012 | 8937 |
| 2011 | 34271 | 19722 | 9174 |
| 2012 | 36106 | 19706 | 9324 |
| 2013 | 35697 | 24242 | 9612 |
| 2014 | 36766 | 26501 | 9987 |
| 2015 | 38110 | 29154 | 10610 |
| 2016 | 38325 | 32795 | 10373 |
| 2017 | 39082 | 37501 | 10646 |
| 2018 | 40229 | 41730 | 11177 |
| 2019 | 41760 | 55799 | 11624 |
| 2020 | 43022 | 62615 | 12125 |
| 2021 | 46298 | 71463 | 13636 |
| 2022 | 41914 | 87995 | 12269 |
| 2023 | 40225 | 91462 | 11662 |
| 2024 | 40363 | 105721 | 12117 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 140 | 2 | 73 |
| 1997 | 191 | 2 | 87 |
| 1998 | 273 | 2 | 96 |
| 1999 | 439 | 2 | 208 |
| 2000 | 453 | 5 | 199 |
| 2001 | 460 | 8 | 187 |
| 2002 | 591 | 7 | 201 |
| 2003 | 585 | 10 | 173 |
| 2004 | 551 | 11 | 223 |
| 2005 | 699 | 15 | 384 |
| 2006 | 809 | 29 | 348 |
| 2007 | 920 | 33 | 402 |
| 2008 | 1040 | 87 | 371 |
| 2009 | 1071 | 106 | 404 |
| 2010 | 1181 | 118 | 440 |
| 2011 | 1247 | 111 | 452 |
| 2012 | 1259 | 282 | 499 |
| 2013 | 1370 | 231 | 581 |
| 2014 | 1483 | 395 | 525 |
| 2015 | 1564 | 410 | 548 |
| 2016 | 1686 | 363 | 774 |
| 2017 | 1802 | 476 | 653 |
| 2018 | 2007 | 638 | 699 |
| 2019 | 1924 | 645 | 680 |
| 2020 | 2116 | 751 | 778 |
| 2021 | 1887 | 858 | 694 |
| 2022 | 2111 | 1154 | 772 |
| 2023 | 2176 | 1611 | 804 |
| 2024 | 1739 | 1383 | 655 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 22560 | 920 | 6817 |
| 1997 | 23489 | 1144 | 7014 |
| 1998 | 23087 | 1429 | 7322 |
| 1999 | 22986 | 1559 | 7355 |
| 2000 | 23439 | 1623 | 7433 |
| 2001 | 23777 | 2084 | 6945 |
| 2002 | 25067 | 2524 | 7253 |
| 2003 | 27591 | 3366 | 7583 |
| 2004 | 28447 | 4542 | 7614 |
| 2005 | 29372 | 7421 | 7688 |
| 2006 | 30409 | 8836 | 8164 |
| 2007 | 31623 | 10659 | 8666 |
| 2008 | 32670 | 12058 | 8637 |
| 2009 | 32648 | 13810 | 8967 |
| 2010 | 33625 | 15968 | 8952 |
| 2011 | 33892 | 18389 | 9174 |
| 2012 | 35486 | 18800 | 9380 |
| 2013 | 34899 | 22193 | 9683 |
| 2014 | 36135 | 24408 | 10039 |
| 2015 | 37417 | 27530 | 10522 |
| 2016 | 37797 | 31266 | 10581 |
| 2017 | 38533 | 35084 | 10769 |
| 2018 | 39922 | 39999 | 11274 |
| 2019 | 41183 | 52104 | 11715 |
| 2020 | 42359 | 58631 | 12264 |
| 2021 | 44574 | 66532 | 13486 |
| 2022 | 39113 | 79769 | 11885 |
| 2023 | 33147 | 75043 | 10274 |
| 2024 | 16152 | 43759 | 5532 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 1102 | 156 | 438 |
| 1997 | 1296 | 148 | 427 |
| 1998 | 1000 | 216 | 398 |
| 1999 | 991 | 229 | 408 |
| 2000 | 933 | 174 | 372 |
| 2001 | 1016 | 301 | 381 |
| 2002 | 1344 | 204 | 397 |
| 2003 | 1512 | 284 | 327 |
| 2004 | 1443 | 377 | 498 |
| 2005 | 1523 | 797 | 554 |
| 2006 | 1563 | 956 | 532 |
| 2007 | 1707 | 995 | 459 |
| 2008 | 1791 | 1180 | 460 |
| 2009 | 1655 | 928 | 433 |
| 2010 | 1754 | 1162 | 425 |
| 2011 | 1626 | 1444 | 452 |
| 2012 | 1879 | 1188 | 443 |
| 2013 | 2168 | 2280 | 510 |
| 2014 | 2114 | 2488 | 473 |
| 2015 | 2257 | 2034 | 636 |
| 2016 | 2214 | 1892 | 566 |
| 2017 | 2351 | 2893 | 530 |
| 2018 | 2314 | 2369 | 602 |
| 2019 | 2501 | 4340 | 589 |
| 2020 | 2779 | 4735 | 639 |
| 2021 | 3611 | 5789 | 844 |
| 2022 | 4912 | 9380 | 1156 |
| 2023 | 9254 | 18030 | 2192 |
| 2024 | 25950 | 63345 | 7240 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 1162451 | 25110 | 333220 |
| 1997 | 1243704 | 32438 | 375360 |
| 1998 | 1282039 | 35880 | 400336 |
| 1999 | 1303567 | 47974 | 413127 |
| 2000 | 1483487 | 53462 | 475328 |
| 2001 | 1490043 | 67694 | 430741 |
| 2002 | 1612569 | 77129 | 497358 |
| 2003 | 1731779 | 123260 | 533112 |
| 2004 | 1803978 | 170242 | 518899 |
| 2005 | 1752662 | 220671 | 541435 |
| 2006 | 1817613 | 274237 | 541912 |
| 2007 | 1821572 | 333891 | 570460 |
| 2008 | 1762857 | 372846 | 556332 |
| 2009 | 1721418 | 425644 | 597148 |
| 2010 | 1690949 | 516162 | 557363 |
| 2011 | 1646437 | 545713 | 537077 |
| 2012 | 1586402 | 563855 | 507731 |
| 2013 | 1476776 | 632600 | 491075 |
| 2014 | 1439777 | 704410 | 472980 |
| 2015 | 1330617 | 799400 | 456465 |
| 2016 | 1275132 | 827825 | 442347 |
| 2017 | 1168834 | 896815 | 399778 |
| 2018 | 1117097 | 1003722 | 381792 |
| 2019 | 993204 | 1134944 | 349712 |
| 2020 | 892395 | 1181114 | 311408 |
| 2021 | 656810 | 1029769 | 229691 |
| 2022 | 369392 | 841308 | 132145 |
| 2023 | 180533 | 468457 | 64005 |
| 2024 | 39935 | 120562 | 14614 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 653233 | 15530 | 263999 |
| 1997 | 706989 | 19492 | 300992 |
| 1998 | 730942 | 20552 | 320006 |
| 1999 | 748506 | 27523 | 330058 |
| 2000 | 884695 | 27490 | 388788 |
| 2001 | 877434 | 35528 | 349657 |
| 2002 | 961926 | 37549 | 407926 |
| 2003 | 1028480 | 62381 | 437378 |
| 2004 | 1079347 | 84856 | 424047 |
| 2005 | 1037716 | 101424 | 441308 |
| 2006 | 1085369 | 129196 | 437442 |
| 2007 | 1090831 | 152649 | 460421 |
| 2008 | 1046224 | 170906 | 449189 |
| 2009 | 1025891 | 190961 | 481445 |
| 2010 | 1017384 | 234486 | 450640 |
| 2011 | 1005934 | 239799 | 433938 |
| 2012 | 954373 | 238133 | 405827 |
| 2013 | 906894 | 257113 | 393904 |
| 2014 | 874721 | 277808 | 376039 |
| 2015 | 816705 | 310452 | 364454 |
| 2016 | 802196 | 309161 | 355512 |
| 2017 | 741389 | 327325 | 320732 |
| 2018 | 725262 | 349007 | 307794 |
| 2019 | 642668 | 391229 | 282584 |
| 2020 | 599013 | 398436 | 253420 |
| 2021 | 435564 | 310595 | 184054 |
| 2022 | 246302 | 239205 | 106302 |
| 2023 | 120195 | 127095 | 51273 |
| 2024 | 26013 | 30853 | 11262 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 509218 | 9580 | 69221 |
| 1997 | 536715 | 12946 | 74368 |
| 1998 | 551097 | 15328 | 80330 |
| 1999 | 555061 | 20451 | 83069 |
| 2000 | 598792 | 25972 | 86540 |
| 2001 | 612609 | 32166 | 81084 |
| 2002 | 650643 | 39580 | 89432 |
| 2003 | 703299 | 60879 | 95734 |
| 2004 | 724631 | 85386 | 94852 |
| 2005 | 714946 | 119247 | 100127 |
| 2006 | 732244 | 145041 | 104470 |
| 2007 | 730741 | 181242 | 110039 |
| 2008 | 716633 | 201940 | 107143 |
| 2009 | 695527 | 234683 | 115703 |
| 2010 | 673565 | 281676 | 106723 |
| 2011 | 640503 | 305914 | 103139 |
| 2012 | 632029 | 325722 | 101904 |
| 2013 | 569882 | 375487 | 97171 |
| 2014 | 565056 | 426602 | 96941 |
| 2015 | 513912 | 488948 | 92011 |
| 2016 | 472936 | 518664 | 86835 |
| 2017 | 427445 | 569490 | 79046 |
| 2018 | 391835 | 654715 | 73998 |
| 2019 | 350536 | 743715 | 67128 |
| 2020 | 293382 | 782678 | 57988 |
| 2021 | 221246 | 719174 | 45637 |
| 2022 | 123090 | 602103 | 25843 |
| 2023 | 60338 | 341362 | 12732 |
| 2024 | 13922 | 89709 | 3352 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 23.75 | 40.61 | 36.49 |
| 1997 | 22.88 | 40.17 | 36.96 |
| 1998 | 24.94 | 33.01 | 39.25 |
| 1999 | 24.39 | 30.26 | 39.68 |
| 2000 | 22.44 | 33.33 | 38.80 |
| 2001 | 19.79 | 24.40 | 36.58 |
| 2002 | 21.33 | 28.08 | 39.80 |
| 2003 | 28.82 | 34.19 | 50.64 |
| 2004 | 29.98 | 31.51 | 51.85 |
| 2005 | 30.56 | 21.96 | 53.39 |
| 2006 | 32.54 | 21.61 | 54.89 |
| 2007 | 33.71 | 21.32 | 57.10 |
| 2008 | 34.78 | 22.06 | 57.96 |
| 2009 | 35.54 | 22.70 | 59.77 |
| 2010 | 36.60 | 22.98 | 61.78 |
| 2011 | 38.27 | 22.58 | 62.51 |
| 2012 | 39.08 | 24.29 | 64.22 |
| 2013 | 40.17 | 22.02 | 66.36 |
| 2014 | 41.58 | 22.86 | 66.45 |
| 2015 | 42.84 | 24.62 | 67.10 |
| 2016 | 44.62 | 24.00 | 69.09 |
| 2017 | 45.77 | 23.13 | 70.44 |
| 2018 | 47.87 | 24.58 | 71.99 |
| 2019 | 48.38 | 22.28 | 73.33 |
| 2020 | 50.03 | 22.76 | 75.86 |
| 2021 | 49.89 | 22.09 | 75.79 |
| 2022 | 52.06 | 19.43 | 77.88 |
| 2023 | 50.14 | 17.89 | 77.40 |
| 2024 | 52.05 | 17.69 | 79.01 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 26.20 | 16.73 | 17.75 |
| 1997 | 30.93 | 17.41 | 23.26 |
| 1998 | 31.47 | 19.64 | 24.75 |
| 1999 | 31.57 | 18.46 | 26.72 |
| 2000 | 31.40 | 20.31 | 26.21 |
| 2001 | 30.71 | 18.41 | 27.34 |
| 2002 | 30.15 | 20.23 | 28.18 |
| 2003 | 32.99 | 24.85 | 31.96 |
| 2004 | 32.76 | 23.03 | 32.98 |
| 2005 | 33.52 | 24.58 | 33.72 |
| 2006 | 33.84 | 23.96 | 35.63 |
| 2007 | 35.93 | 23.90 | 38.14 |
| 2008 | 36.69 | 24.48 | 40.94 |
| 2009 | 40.03 | 26.39 | 43.87 |
| 2010 | 41.28 | 27.28 | 42.90 |
| 2011 | 42.92 | 32.03 | 46.00 |
| 2012 | 43.76 | 32.43 | 45.40 |
| 2013 | 44.05 | 32.22 | 49.32 |
| 2014 | 47.42 | 34.57 | 57.24 |
| 2015 | 49.71 | 37.07 | 62.20 |
| 2016 | 54.47 | 39.21 | 69.00 |
| 2017 | 55.85 | 40.31 | 72.82 |
| 2018 | 58.17 | 41.61 | 74.97 |
| 2019 | 61.50 | 44.59 | 76.12 |
| 2020 | 63.88 | 47.78 | 77.94 |
| 2021 | 67.26 | 50.34 | 79.90 |
| 2022 | 68.91 | 56.47 | 81.18 |
| 2023 | 71.45 | 55.37 | 82.58 |
| 2024 | 62.39 | 48.66 | 76.78 |