| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 4759 | 642 | 728 |
| 1997 | 4693 | 675 | 1006 |
| 1998 | 4707 | 629 | 934 |
| 1999 | 4486 | 1041 | 926 |
| 2000 | 4511 | 971 | 981 |
| 2001 | 4698 | 1779 | 891 |
| 2002 | 4726 | 1064 | 896 |
| 2003 | 4883 | 1452 | 952 |
| 2004 | 5138 | 2554 | 1012 |
| 2005 | 5681 | 4064 | 1287 |
| 2006 | 5894 | 4652 | 1253 |
| 2007 | 6431 | 4772 | 1642 |
| 2008 | 7404 | 4791 | 1755 |
| 2009 | 8267 | 5202 | 2027 |
| 2010 | 9616 | 5038 | 2491 |
| 2011 | 11897 | 6219 | 3127 |
| 2012 | 15400 | 8748 | 4305 |
| 2013 | 17478 | 12360 | 5150 |
| 2014 | 16579 | 12259 | 4807 |
| 2015 | 18256 | 14359 | 5338 |
| 2016 | 18810 | 16725 | 6086 |
| 2017 | 18777 | 15720 | 6131 |
| 2018 | 16635 | 11665 | 5565 |
| 2019 | 16694 | 11121 | 5527 |
| 2020 | 17564 | 12965 | 5792 |
| 2021 | 17828 | 13684 | 6054 |
| 2022 | 17421 | 14633 | 6116 |
| 2023 | 16160 | 19157 | 5984 |
| 2024 | 17877 | 30714 | 6833 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 4246 | 639 | 607 |
| 1997 | 4113 | 674 | 843 |
| 1998 | 4130 | 625 | 817 |
| 1999 | 4082 | 1041 | 821 |
| 2000 | 4133 | 969 | 898 |
| 2001 | 4296 | 1774 | 809 |
| 2002 | 4289 | 1058 | 760 |
| 2003 | 4389 | 1449 | 845 |
| 2004 | 4666 | 2539 | 878 |
| 2005 | 5157 | 4054 | 1111 |
| 2006 | 5190 | 4641 | 1052 |
| 2007 | 5774 | 4761 | 1455 |
| 2008 | 6703 | 4755 | 1573 |
| 2009 | 7560 | 5157 | 1852 |
| 2010 | 8853 | 4909 | 2258 |
| 2011 | 11096 | 6087 | 2869 |
| 2012 | 14600 | 8559 | 4026 |
| 2013 | 16650 | 12177 | 4853 |
| 2014 | 15782 | 12087 | 4581 |
| 2015 | 17287 | 14179 | 5081 |
| 2016 | 17669 | 16533 | 5747 |
| 2017 | 17661 | 15511 | 5841 |
| 2018 | 15689 | 11335 | 5283 |
| 2019 | 15868 | 10837 | 5282 |
| 2020 | 16686 | 12591 | 5560 |
| 2021 | 17074 | 13354 | 5810 |
| 2022 | 16603 | 14274 | 5828 |
| 2023 | 15131 | 18593 | 5694 |
| 2024 | 17226 | 30364 | 6561 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 513 | 3 | 121 |
| 1997 | 580 | 1 | 163 |
| 1998 | 577 | 4 | 117 |
| 1999 | 404 | 0 | 105 |
| 2000 | 378 | 2 | 83 |
| 2001 | 402 | 5 | 82 |
| 2002 | 437 | 6 | 136 |
| 2003 | 494 | 3 | 107 |
| 2004 | 472 | 15 | 134 |
| 2005 | 524 | 10 | 176 |
| 2006 | 704 | 11 | 201 |
| 2007 | 657 | 11 | 187 |
| 2008 | 701 | 36 | 182 |
| 2009 | 707 | 45 | 175 |
| 2010 | 763 | 129 | 233 |
| 2011 | 801 | 132 | 258 |
| 2012 | 800 | 189 | 279 |
| 2013 | 828 | 183 | 297 |
| 2014 | 797 | 172 | 226 |
| 2015 | 969 | 180 | 257 |
| 2016 | 1141 | 192 | 339 |
| 2017 | 1116 | 209 | 290 |
| 2018 | 946 | 330 | 282 |
| 2019 | 826 | 284 | 245 |
| 2020 | 878 | 374 | 232 |
| 2021 | 754 | 330 | 244 |
| 2022 | 818 | 359 | 288 |
| 2023 | 1029 | 564 | 290 |
| 2024 | 651 | 350 | 272 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 4406 | 378 | 653 |
| 1997 | 4359 | 449 | 748 |
| 1998 | 4354 | 441 | 760 |
| 1999 | 4210 | 694 | 730 |
| 2000 | 4292 | 728 | 843 |
| 2001 | 4419 | 1172 | 751 |
| 2002 | 4502 | 812 | 802 |
| 2003 | 4584 | 1129 | 863 |
| 2004 | 4857 | 1847 | 899 |
| 2005 | 5179 | 2808 | 1058 |
| 2006 | 5257 | 3306 | 1030 |
| 2007 | 5903 | 3400 | 1386 |
| 2008 | 6701 | 3622 | 1538 |
| 2009 | 7567 | 3956 | 1750 |
| 2010 | 8743 | 3841 | 2140 |
| 2011 | 11259 | 5186 | 2853 |
| 2012 | 14605 | 7496 | 3994 |
| 2013 | 16808 | 10697 | 4853 |
| 2014 | 15792 | 11102 | 4501 |
| 2015 | 17147 | 13198 | 5008 |
| 2016 | 17705 | 15574 | 5709 |
| 2017 | 17751 | 14496 | 5832 |
| 2018 | 15648 | 10570 | 5262 |
| 2019 | 15631 | 10052 | 5187 |
| 2020 | 16851 | 11746 | 5535 |
| 2021 | 16413 | 12088 | 5594 |
| 2022 | 15380 | 12422 | 5346 |
| 2023 | 13172 | 14546 | 4811 |
| 2024 | 7123 | 11085 | 2692 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 353 | 264 | 75 |
| 1997 | 334 | 226 | 258 |
| 1998 | 353 | 188 | 174 |
| 1999 | 276 | 347 | 196 |
| 2000 | 219 | 243 | 138 |
| 2001 | 279 | 607 | 140 |
| 2002 | 224 | 252 | 94 |
| 2003 | 299 | 323 | 89 |
| 2004 | 281 | 707 | 113 |
| 2005 | 502 | 1256 | 229 |
| 2006 | 637 | 1346 | 223 |
| 2007 | 528 | 1372 | 256 |
| 2008 | 703 | 1169 | 217 |
| 2009 | 700 | 1246 | 277 |
| 2010 | 873 | 1197 | 351 |
| 2011 | 638 | 1033 | 274 |
| 2012 | 795 | 1252 | 311 |
| 2013 | 670 | 1663 | 297 |
| 2014 | 787 | 1157 | 306 |
| 2015 | 1109 | 1161 | 330 |
| 2016 | 1105 | 1151 | 377 |
| 2017 | 1026 | 1224 | 299 |
| 2018 | 987 | 1095 | 303 |
| 2019 | 1063 | 1069 | 340 |
| 2020 | 713 | 1219 | 257 |
| 2021 | 1415 | 1596 | 460 |
| 2022 | 2041 | 2211 | 770 |
| 2023 | 2988 | 4611 | 1173 |
| 2024 | 10754 | 19629 | 4141 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 1063014 | 7949 | 134885 |
| 1997 | 1162656 | 9543 | 169639 |
| 1998 | 1220734 | 10820 | 193009 |
| 1999 | 1165560 | 17028 | 181661 |
| 2000 | 1318166 | 16675 | 273281 |
| 2001 | 1306931 | 45695 | 196876 |
| 2002 | 1320090 | 30297 | 222881 |
| 2003 | 1250649 | 42405 | 224722 |
| 2004 | 1255887 | 64329 | 294907 |
| 2005 | 1317764 | 67291 | 309594 |
| 2006 | 1294574 | 67054 | 265990 |
| 2007 | 1241808 | 80951 | 302246 |
| 2008 | 1388165 | 106330 | 300052 |
| 2009 | 1381417 | 146525 | 315685 |
| 2010 | 1389316 | 168134 | 365360 |
| 2011 | 1476736 | 205388 | 335221 |
| 2012 | 1562389 | 333319 | 439225 |
| 2013 | 1484760 | 444600 | 411510 |
| 2014 | 1322029 | 467640 | 371599 |
| 2015 | 1390331 | 536240 | 407512 |
| 2016 | 1207335 | 573723 | 399346 |
| 2017 | 1095060 | 513690 | 347502 |
| 2018 | 919779 | 368943 | 292161 |
| 2019 | 786020 | 312686 | 230482 |
| 2020 | 752492 | 396226 | 261174 |
| 2021 | 493102 | 259221 | 183811 |
| 2022 | 279348 | 178681 | 98809 |
| 2023 | 134182 | 111068 | 45730 |
| 2024 | 27478 | 32995 | 11213 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 556032 | 4249 | 112572 |
| 1997 | 633037 | 4281 | 142774 |
| 1998 | 682706 | 5523 | 161877 |
| 1999 | 659977 | 8932 | 152459 |
| 2000 | 763475 | 7110 | 234197 |
| 2001 | 754060 | 27557 | 165458 |
| 2002 | 757893 | 13609 | 186561 |
| 2003 | 712320 | 22611 | 189477 |
| 2004 | 726384 | 31700 | 253369 |
| 2005 | 750222 | 35133 | 261455 |
| 2006 | 758637 | 33529 | 224125 |
| 2007 | 714884 | 43083 | 250328 |
| 2008 | 814886 | 53536 | 250313 |
| 2009 | 795142 | 81157 | 262169 |
| 2010 | 796637 | 94324 | 303215 |
| 2011 | 864422 | 117290 | 275703 |
| 2012 | 915343 | 187901 | 361559 |
| 2013 | 873141 | 238244 | 336117 |
| 2014 | 785924 | 247182 | 300342 |
| 2015 | 858754 | 273362 | 333692 |
| 2016 | 742688 | 288104 | 326450 |
| 2017 | 687773 | 253503 | 284371 |
| 2018 | 580309 | 170793 | 239256 |
| 2019 | 492755 | 136984 | 188421 |
| 2020 | 478533 | 193077 | 216510 |
| 2021 | 313623 | 104032 | 151782 |
| 2022 | 176336 | 65438 | 80961 |
| 2023 | 85654 | 38146 | 36908 |
| 2024 | 17536 | 11546 | 9005 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 506982 | 3700 | 22313 |
| 1997 | 529619 | 5262 | 26865 |
| 1998 | 538028 | 5297 | 31132 |
| 1999 | 505583 | 8096 | 29202 |
| 2000 | 554691 | 9565 | 39084 |
| 2001 | 552871 | 18138 | 31418 |
| 2002 | 562197 | 16688 | 36320 |
| 2003 | 538329 | 19794 | 35245 |
| 2004 | 529503 | 32629 | 41538 |
| 2005 | 567542 | 32158 | 48139 |
| 2006 | 535937 | 33525 | 41865 |
| 2007 | 526924 | 37868 | 51918 |
| 2008 | 573279 | 52794 | 49739 |
| 2009 | 586275 | 65368 | 53516 |
| 2010 | 592679 | 73810 | 62145 |
| 2011 | 612314 | 88098 | 59518 |
| 2012 | 647046 | 145418 | 77666 |
| 2013 | 611619 | 206356 | 75393 |
| 2014 | 536105 | 220458 | 71257 |
| 2015 | 531577 | 262878 | 73820 |
| 2016 | 464647 | 285619 | 72896 |
| 2017 | 407287 | 260187 | 63131 |
| 2018 | 339470 | 198150 | 52905 |
| 2019 | 293265 | 175702 | 42061 |
| 2020 | 273959 | 203149 | 44664 |
| 2021 | 179479 | 155189 | 32029 |
| 2022 | 103012 | 113243 | 17848 |
| 2023 | 48528 | 72922 | 8822 |
| 2024 | 9942 | 21449 | 2208 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 22.13 | 8.88 | 39.01 |
| 1997 | 23.52 | 11.41 | 31.61 |
| 1998 | 24.30 | 12.56 | 35.22 |
| 1999 | 25.84 | 13.26 | 37.58 |
| 2000 | 25.47 | 9.78 | 42.10 |
| 2001 | 22.82 | 7.64 | 38.95 |
| 2002 | 22.60 | 11.75 | 36.38 |
| 2003 | 30.10 | 13.15 | 51.47 |
| 2004 | 31.35 | 9.75 | 50.99 |
| 2005 | 34.87 | 8.24 | 55.71 |
| 2006 | 34.46 | 7.48 | 57.38 |
| 2007 | 37.55 | 9.22 | 56.64 |
| 2008 | 39.15 | 10.62 | 65.24 |
| 2009 | 39.76 | 13.09 | 64.13 |
| 2010 | 40.45 | 15.82 | 64.43 |
| 2011 | 43.32 | 22.06 | 65.37 |
| 2012 | 45.46 | 25.87 | 67.78 |
| 2013 | 47.75 | 25.80 | 68.08 |
| 2014 | 49.85 | 27.03 | 70.25 |
| 2015 | 50.98 | 29.03 | 71.21 |
| 2016 | 52.95 | 29.00 | 69.72 |
| 2017 | 53.28 | 29.48 | 71.29 |
| 2018 | 52.19 | 28.62 | 73.10 |
| 2019 | 50.81 | 29.93 | 72.79 |
| 2020 | 51.91 | 29.27 | 76.35 |
| 2021 | 51.12 | 28.45 | 75.11 |
| 2022 | 52.30 | 27.08 | 76.24 |
| 2023 | 51.52 | 22.55 | 75.32 |
| 2024 | 55.35 | 20.12 | 77.39 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 55.64 | 20.40 | 50.27 |
| 1997 | 57.04 | 7.26 | 45.33 |
| 1998 | 56.19 | 8.11 | 44.86 |
| 1999 | 56.44 | 12.68 | 44.82 |
| 2000 | 55.46 | 10.40 | 45.46 |
| 2001 | 57.56 | 14.95 | 46.58 |
| 2002 | 59.99 | 14.57 | 47.99 |
| 2003 | 58.04 | 15.77 | 49.37 |
| 2004 | 60.84 | 17.78 | 51.19 |
| 2005 | 60.41 | 20.13 | 49.34 |
| 2006 | 58.48 | 21.26 | 49.56 |
| 2007 | 64.14 | 24.75 | 55.18 |
| 2008 | 71.18 | 29.05 | 65.81 |
| 2009 | 76.45 | 32.99 | 69.17 |
| 2010 | 79.07 | 34.74 | 72.50 |
| 2011 | 85.20 | 56.92 | 81.36 |
| 2012 | 88.18 | 67.17 | 86.13 |
| 2013 | 91.11 | 73.27 | 88.60 |
| 2014 | 89.66 | 75.03 | 88.41 |
| 2015 | 90.66 | 81.15 | 90.88 |
| 2016 | 90.97 | 84.42 | 91.74 |
| 2017 | 92.10 | 85.15 | 93.05 |
| 2018 | 92.11 | 80.55 | 93.15 |
| 2019 | 92.06 | 78.84 | 92.76 |
| 2020 | 94.74 | 83.65 | 94.96 |
| 2021 | 92.53 | 81.26 | 93.39 |
| 2022 | 91.60 | 80.58 | 92.76 |
| 2023 | 91.41 | 83.29 | 92.93 |
| 2024 | 89.10 | 88.16 | 90.14 |