Tableau de données
| 1980 | 44,6% | 1996 | 100,2% | 2012 | 87% |
| 1981 | 46,1% | 1997 | 95,3% | 2013 | 87,7% |
| 1982 | 51,7% | 1998 | 93,3% | 2014 | 85,8% |
| 1983 | 57,2% | 1999 | 89% | 2015 | 92,3% |
| 1984 | 60,2% | 2000 | 80,4% | 2016 | 92,5% |
| 1985 | 65,2% | 2001 | 81,5% | 2017 | 91% |
| 1986 | 69,3% | 2002 | 79,6% | 2018 | 90,8% |
| 1987 | 69,8% | 2003 | 75,9% | 2019 | 90,1% |
| 1988 | 69,7% | 2004 | 71,9% | 2020 | 118,1% |
| 1989 | 71% | 2005 | 70,6% | 2021 | 112,6% |
| 1990 | 73,7% | 2006 | 69,9% | 2022 | 103,5% |
| 1991 | 81,7% | 2007 | 67,2% | 2023 | 105,1% |
| 1992 | 88,2% | 2008 | 70,4% | 2024 | 110% |
| 1993 | 94,7% | 2009 | 81,8% | 2025 | 113,5% |
| 1994 | 97,5% | 2010 | 84% | 2026 | 110,7% |
| 1995 | 100,1% | 2011 | 84,3% | | |
Tableau de données
| 1980 | 144 Md | 1996 | 862 Md | 2012 | 1,59 Bn |
| 1981 | 170 Md | 1997 | 864 Md | 2013 | 1,67 Bn |
| 1982 | 201 Md | 1998 | 877 Md | 2014 | 1,71 Bn |
| 1983 | 241 Md | 1999 | 897 Md | 2015 | 1,84 Bn |
| 1984 | 278 Md | 2000 | 890 Md | 2016 | 1,87 Bn |
| 1985 | 326 Md | 2001 | 932 Md | 2017 | 1,95 Bn |
| 1986 | 365 Md | 2002 | 950 Md | 2018 | 2,03 Bn |
| 1987 | 401 Md | 2003 | 953 Md | 2019 | 2,08 Bn |
| 1988 | 437 Md | 2004 | 960 Md | 2020 | 2,62 Bn |
| 1989 | 477 Md | 2005 | 1 Bn | 2021 | 2,86 Bn |
| 1990 | 513 Md | 2006 | 1,05 Bn | 2022 | 2,97 Bn |
| 1991 | 573 Md | 2007 | 1,06 Bn | 2023 | 3,12 Bn |
| 1992 | 634 Md | 2008 | 1,17 Bn | 2024 | 3,42 Bn |
| 1993 | 708 Md | 2009 | 1,29 Bn | 2025 | 3,68 Bn |
| 1994 | 772 Md | 2010 | 1,4 Bn | 2026 | 3,79 Bn |
| 1995 | 832 Md | 2011 | 1,5 Bn | | |
Tableau de données
| 1980 | 14,5% | 1996 | 65,9% | 2012 | 28,6% |
| 1981 | 13,6% | 1997 | 61,5% | 2013 | 27% |
| 1982 | 19,2% | 1998 | 57,5% | 2014 | 22,1% |
| 1983 | 25,7% | 1999 | 50,5% | 2015 | 18,9% |
| 1984 | 29,6% | 2000 | 42% | 2016 | 18,2% |
| 1985 | 35,3% | 2001 | 40,3% | 2017 | 12,8% |
| 1986 | 39,6% | 2002 | 38,9% | 2018 | 11,8% |
| 1987 | 39,3% | 2003 | 35,4% | 2019 | 8,7% |
| 1988 | 38,3% | 2004 | 34,6% | 2020 | 16,2% |
| 1989 | 41,4% | 2005 | 29,3% | 2021 | 14,1% |
| 1990 | 43,9% | 2006 | 25% | 2022 | 13,3% |
| 1991 | 50,3% | 2007 | 22,1% | 2023 | 12,7% |
| 1992 | 56,7% | 2008 | 22,8% | 2024 | 10,8% |
| 1993 | 62,1% | 2009 | 26,9% | 2025 | 10,2% |
| 1994 | 66,2% | 2010 | 28,4% | 2026 | 10,3% |
| 1995 | 66,7% | 2011 | 29% | | |
Tableau de données
| 1980 | 46,7 Md | 1996 | 566 Md | 2012 | 523 Md |
| 1981 | 50 Md | 1997 | 558 Md | 2013 | 514 Md |
| 1982 | 74,7 Md | 1998 | 540 Md | 2014 | 441 Md |
| 1983 | 108 Md | 1999 | 509 Md | 2015 | 377 Md |
| 1984 | 137 Md | 2000 | 464 Md | 2016 | 369 Md |
| 1985 | 176 Md | 2001 | 461 Md | 2017 | 274 Md |
| 1986 | 209 Md | 2002 | 465 Md | 2018 | 265 Md |
| 1987 | 226 Md | 2003 | 445 Md | 2019 | 202 Md |
| 1988 | 240 Md | 2004 | 462 Md | 2020 | 361 Md |
| 1989 | 278 Md | 2005 | 417 Md | 2021 | 358 Md |
| 1990 | 306 Md | 2006 | 374 Md | 2022 | 382 Md |
| 1991 | 353 Md | 2007 | 349 Md | 2023 | 378 Md |
| 1992 | 407 Md | 2008 | 377 Md | 2024 | 337 Md |
| 1993 | 464 Md | 2009 | 422 Md | 2025 | 331 Md |
| 1994 | 524 Md | 2010 | 473 Md | 2026 | 354 Md |
| 1995 | 555 Md | 2011 | 515 Md | | |