| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 13822 | 372 | 4155 |
| 1997 | 13810 | 499 | 4245 |
| 1998 | 13415 | 657 | 4503 |
| 1999 | 13979 | 726 | 4606 |
| 2000 | 14098 | 862 | 4522 |
| 2001 | 14797 | 973 | 4470 |
| 2002 | 14235 | 1046 | 4425 |
| 2003 | 15580 | 1562 | 4632 |
| 2004 | 16492 | 1806 | 4807 |
| 2005 | 16746 | 2715 | 4746 |
| 2006 | 17499 | 3354 | 4991 |
| 2007 | 18307 | 4415 | 5088 |
| 2008 | 18326 | 5002 | 5099 |
| 2009 | 18908 | 5935 | 5130 |
| 2010 | 19090 | 6518 | 5266 |
| 2011 | 20353 | 7904 | 5477 |
| 2012 | 20759 | 8646 | 5377 |
| 2013 | 21169 | 10326 | 5468 |
| 2014 | 21870 | 11241 | 5927 |
| 2015 | 22131 | 12454 | 6317 |
| 2016 | 22024 | 13251 | 6082 |
| 2017 | 22153 | 14625 | 6336 |
| 2018 | 22886 | 16706 | 6505 |
| 2019 | 23036 | 18258 | 6531 |
| 2020 | 24855 | 22786 | 7434 |
| 2021 | 26941 | 27490 | 8371 |
| 2022 | 24983 | 35999 | 7456 |
| 2023 | 23349 | 32353 | 6943 |
| 2024 | 22161 | 34372 | 6428 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 13534 | 370 | 4023 |
| 1997 | 13501 | 499 | 4095 |
| 1998 | 13114 | 656 | 4372 |
| 1999 | 13501 | 724 | 4363 |
| 2000 | 13654 | 857 | 4279 |
| 2001 | 14361 | 969 | 4250 |
| 2002 | 13701 | 1041 | 4199 |
| 2003 | 14944 | 1552 | 4388 |
| 2004 | 15910 | 1797 | 4583 |
| 2005 | 16132 | 2703 | 4532 |
| 2006 | 16596 | 3338 | 4725 |
| 2007 | 17431 | 4403 | 4813 |
| 2008 | 17273 | 4976 | 4774 |
| 2009 | 17520 | 5881 | 4745 |
| 2010 | 17884 | 6435 | 4898 |
| 2011 | 19029 | 7706 | 5072 |
| 2012 | 19443 | 8301 | 5010 |
| 2013 | 20162 | 10156 | 5166 |
| 2014 | 20620 | 11058 | 5559 |
| 2015 | 20835 | 12250 | 5933 |
| 2016 | 20689 | 13040 | 5687 |
| 2017 | 20709 | 14329 | 5895 |
| 2018 | 21565 | 16389 | 6051 |
| 2019 | 21625 | 17777 | 6064 |
| 2020 | 23114 | 22090 | 6821 |
| 2021 | 25418 | 26934 | 7703 |
| 2022 | 23371 | 35369 | 6860 |
| 2023 | 21540 | 31478 | 6349 |
| 2024 | 20701 | 33620 | 5915 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 288 | 2 | 132 |
| 1997 | 309 | 0 | 150 |
| 1998 | 301 | 1 | 131 |
| 1999 | 478 | 2 | 243 |
| 2000 | 444 | 5 | 243 |
| 2001 | 436 | 4 | 220 |
| 2002 | 534 | 5 | 226 |
| 2003 | 636 | 10 | 244 |
| 2004 | 582 | 9 | 224 |
| 2005 | 614 | 12 | 214 |
| 2006 | 903 | 16 | 266 |
| 2007 | 876 | 12 | 275 |
| 2008 | 1053 | 26 | 325 |
| 2009 | 1388 | 54 | 385 |
| 2010 | 1206 | 83 | 368 |
| 2011 | 1324 | 198 | 405 |
| 2012 | 1316 | 345 | 367 |
| 2013 | 1007 | 170 | 302 |
| 2014 | 1250 | 183 | 368 |
| 2015 | 1296 | 204 | 384 |
| 2016 | 1335 | 211 | 395 |
| 2017 | 1444 | 296 | 441 |
| 2018 | 1321 | 317 | 454 |
| 2019 | 1411 | 481 | 467 |
| 2020 | 1741 | 696 | 613 |
| 2021 | 1523 | 556 | 668 |
| 2022 | 1612 | 630 | 596 |
| 2023 | 1809 | 875 | 594 |
| 2024 | 1460 | 752 | 513 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 13393 | 271 | 4015 |
| 1997 | 13106 | 317 | 4043 |
| 1998 | 13101 | 457 | 4278 |
| 1999 | 13540 | 506 | 4418 |
| 2000 | 13754 | 604 | 4354 |
| 2001 | 14161 | 693 | 4250 |
| 2002 | 13769 | 803 | 4265 |
| 2003 | 15161 | 1146 | 4481 |
| 2004 | 16031 | 1412 | 4632 |
| 2005 | 16260 | 2291 | 4566 |
| 2006 | 16917 | 2797 | 4825 |
| 2007 | 17762 | 3643 | 4916 |
| 2008 | 17811 | 4139 | 4946 |
| 2009 | 18181 | 5046 | 4922 |
| 2010 | 18602 | 5688 | 5093 |
| 2011 | 19805 | 7022 | 5302 |
| 2012 | 20190 | 7638 | 5215 |
| 2013 | 20665 | 9336 | 5299 |
| 2014 | 21247 | 10294 | 5730 |
| 2015 | 21456 | 11717 | 6128 |
| 2016 | 21375 | 12423 | 5905 |
| 2017 | 21445 | 13928 | 6133 |
| 2018 | 22137 | 15981 | 6276 |
| 2019 | 22068 | 16993 | 6267 |
| 2020 | 23739 | 21305 | 7105 |
| 2021 | 25563 | 25594 | 7966 |
| 2022 | 22810 | 32675 | 6903 |
| 2023 | 19004 | 25991 | 5832 |
| 2024 | 8988 | 12676 | 2808 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 429 | 101 | 140 |
| 1997 | 704 | 182 | 202 |
| 1998 | 314 | 200 | 225 |
| 1999 | 439 | 220 | 188 |
| 2000 | 344 | 258 | 168 |
| 2001 | 636 | 280 | 220 |
| 2002 | 466 | 243 | 160 |
| 2003 | 419 | 416 | 151 |
| 2004 | 461 | 394 | 175 |
| 2005 | 486 | 424 | 180 |
| 2006 | 582 | 557 | 166 |
| 2007 | 545 | 772 | 172 |
| 2008 | 515 | 863 | 153 |
| 2009 | 727 | 889 | 208 |
| 2010 | 488 | 830 | 173 |
| 2011 | 548 | 882 | 175 |
| 2012 | 569 | 1008 | 162 |
| 2013 | 504 | 990 | 169 |
| 2014 | 623 | 947 | 197 |
| 2015 | 675 | 737 | 189 |
| 2016 | 649 | 828 | 177 |
| 2017 | 708 | 697 | 203 |
| 2018 | 749 | 725 | 229 |
| 2019 | 968 | 1265 | 264 |
| 2020 | 1116 | 1481 | 329 |
| 2021 | 1378 | 1896 | 405 |
| 2022 | 2173 | 3324 | 553 |
| 2023 | 4345 | 6362 | 1111 |
| 2024 | 13173 | 21696 | 3620 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 917289 | 8570 | 227980 |
| 1997 | 931475 | 10808 | 253297 |
| 1998 | 1006105 | 12102 | 287217 |
| 1999 | 1050422 | 16996 | 299601 |
| 2000 | 1171706 | 16199 | 325742 |
| 2001 | 1120121 | 18456 | 308206 |
| 2002 | 1140737 | 26216 | 331640 |
| 2003 | 1263041 | 33656 | 360036 |
| 2004 | 1336709 | 56697 | 352028 |
| 2005 | 1369951 | 81765 | 362071 |
| 2006 | 1316376 | 92667 | 365639 |
| 2007 | 1374032 | 128781 | 362336 |
| 2008 | 1357763 | 146282 | 371982 |
| 2009 | 1342273 | 169395 | 361305 |
| 2010 | 1335785 | 199288 | 394093 |
| 2011 | 1330623 | 224572 | 374591 |
| 2012 | 1230038 | 244765 | 333189 |
| 2013 | 1221080 | 283851 | 336055 |
| 2014 | 1170312 | 325866 | 354813 |
| 2015 | 1100449 | 360656 | 328046 |
| 2016 | 1012766 | 364633 | 293012 |
| 2017 | 943178 | 415495 | 292588 |
| 2018 | 853315 | 470657 | 268745 |
| 2019 | 759721 | 447544 | 225458 |
| 2020 | 742443 | 581008 | 227034 |
| 2021 | 510941 | 439129 | 179404 |
| 2022 | 291632 | 359521 | 102388 |
| 2023 | 130505 | 158479 | 45250 |
| 2024 | 26436 | 30994 | 8726 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 486470 | 6344 | 181898 |
| 1997 | 498613 | 7787 | 203456 |
| 1998 | 536454 | 9052 | 231517 |
| 1999 | 572520 | 12730 | 242175 |
| 2000 | 657206 | 10860 | 267599 |
| 2001 | 616685 | 11234 | 252060 |
| 2002 | 633910 | 17882 | 271041 |
| 2003 | 709071 | 22508 | 295859 |
| 2004 | 757574 | 37854 | 287386 |
| 2005 | 780250 | 50718 | 297481 |
| 2006 | 749751 | 57610 | 299531 |
| 2007 | 785537 | 76806 | 295623 |
| 2008 | 783525 | 88399 | 305920 |
| 2009 | 774933 | 97102 | 296282 |
| 2010 | 787003 | 114607 | 326784 |
| 2011 | 783586 | 127170 | 309595 |
| 2012 | 724762 | 134430 | 273649 |
| 2013 | 730510 | 151681 | 278488 |
| 2014 | 706813 | 168528 | 294417 |
| 2015 | 670875 | 182332 | 270091 |
| 2016 | 619891 | 180680 | 241009 |
| 2017 | 593668 | 197500 | 245031 |
| 2018 | 540732 | 217986 | 224316 |
| 2019 | 486521 | 200604 | 187798 |
| 2020 | 494966 | 295462 | 190424 |
| 2021 | 332999 | 176098 | 149986 |
| 2022 | 190928 | 132791 | 85238 |
| 2023 | 84519 | 56889 | 37625 |
| 2024 | 16822 | 11169 | 7078 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 430819 | 2226 | 46082 |
| 1997 | 432862 | 3021 | 49841 |
| 1998 | 469651 | 3050 | 55700 |
| 1999 | 477902 | 4266 | 57426 |
| 2000 | 514500 | 5339 | 58143 |
| 2001 | 503436 | 7222 | 56146 |
| 2002 | 506827 | 8334 | 60599 |
| 2003 | 553970 | 11148 | 64177 |
| 2004 | 579135 | 18843 | 64642 |
| 2005 | 589701 | 31047 | 64590 |
| 2006 | 566625 | 35057 | 66108 |
| 2007 | 588495 | 51975 | 66713 |
| 2008 | 574238 | 57883 | 66062 |
| 2009 | 567340 | 72293 | 65023 |
| 2010 | 548782 | 84681 | 67309 |
| 2011 | 547037 | 97402 | 64996 |
| 2012 | 505276 | 110335 | 59540 |
| 2013 | 490570 | 132170 | 57567 |
| 2014 | 463499 | 157338 | 60396 |
| 2015 | 429574 | 178324 | 57955 |
| 2016 | 392875 | 183953 | 52003 |
| 2017 | 349510 | 217995 | 47557 |
| 2018 | 312583 | 252671 | 44429 |
| 2019 | 273200 | 246940 | 37660 |
| 2020 | 247477 | 285546 | 36610 |
| 2021 | 177942 | 263031 | 29418 |
| 2022 | 100704 | 226730 | 17150 |
| 2023 | 45986 | 101590 | 7625 |
| 2024 | 9614 | 19825 | 1648 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 25.60 | 33.60 | 38.36 |
| 1997 | 25.09 | 25.25 | 39.98 |
| 1998 | 27.48 | 26.18 | 39.73 |
| 1999 | 27.27 | 24.38 | 40.10 |
| 2000 | 24.07 | 19.95 | 40.16 |
| 2001 | 18.04 | 16.44 | 34.25 |
| 2002 | 20.93 | 21.70 | 36.68 |
| 2003 | 29.92 | 22.92 | 48.51 |
| 2004 | 30.93 | 23.53 | 52.40 |
| 2005 | 31.21 | 22.80 | 50.61 |
| 2006 | 31.56 | 20.04 | 53.32 |
| 2007 | 34.39 | 20.34 | 56.84 |
| 2008 | 35.21 | 22.55 | 58.40 |
| 2009 | 35.18 | 20.00 | 59.63 |
| 2010 | 36.49 | 22.23 | 60.62 |
| 2011 | 37.29 | 22.53 | 62.63 |
| 2012 | 37.86 | 21.63 | 63.08 |
| 2013 | 40.17 | 22.40 | 64.36 |
| 2014 | 41.34 | 23.65 | 65.26 |
| 2015 | 42.89 | 23.22 | 67.96 |
| 2016 | 43.98 | 23.68 | 67.99 |
| 2017 | 45.65 | 24.38 | 69.59 |
| 2018 | 46.11 | 24.52 | 70.56 |
| 2019 | 45.96 | 22.98 | 71.03 |
| 2020 | 46.54 | 21.86 | 72.25 |
| 2021 | 46.84 | 19.87 | 72.37 |
| 2022 | 48.33 | 16.66 | 74.68 |
| 2023 | 46.56 | 16.00 | 74.12 |
| 2024 | 47.35 | 14.63 | 75.09 |
| Year | United States | China | United Kingdom |
|---|---|---|---|
| 1996 | 45.15 | 22.31 | 34.78 |
| 1997 | 50.93 | 19.84 | 42.87 |
| 1998 | 52.17 | 27.09 | 42.42 |
| 1999 | 50.15 | 25.76 | 43.38 |
| 2000 | 49.79 | 26.33 | 42.48 |
| 2001 | 48.71 | 22.40 | 42.08 |
| 2002 | 48.75 | 22.56 | 43.75 |
| 2003 | 52.28 | 25.48 | 46.87 |
| 2004 | 52.83 | 27.57 | 48.74 |
| 2005 | 55.76 | 27.37 | 48.55 |
| 2006 | 56.11 | 26.45 | 49.29 |
| 2007 | 60.35 | 27.25 | 53.38 |
| 2008 | 65.06 | 32.09 | 56.05 |
| 2009 | 70.98 | 35.79 | 61.36 |
| 2010 | 72.38 | 37.01 | 62.53 |
| 2011 | 72.76 | 38.52 | 63.16 |
| 2012 | 74.32 | 42.10 | 63.62 |
| 2013 | 74.86 | 44.75 | 66.90 |
| 2014 | 77.82 | 49.88 | 72.30 |
| 2015 | 79.15 | 52.21 | 76.68 |
| 2016 | 79.61 | 54.74 | 83.21 |
| 2017 | 80.56 | 59.01 | 84.93 |
| 2018 | 81.22 | 62.91 | 85.24 |
| 2019 | 81.47 | 58.39 | 87.08 |
| 2020 | 83.46 | 63.58 | 89.37 |
| 2021 | 86.19 | 70.88 | 90.50 |
| 2022 | 87.76 | 76.06 | 91.30 |
| 2023 | 84.82 | 71.29 | 89.56 |
| 2024 | 72.93 | 65.77 | 84.01 |