Tableau de données
| 1980 | 36,2% | 1996 | 31,9% | 2012 | 35,4% |
| 1981 | 37,6% | 1997 | 32,7% | 2013 | 36,3% |
| 1982 | 38,5% | 1998 | 34,1% | 2014 | 35,4% |
| 1983 | 37,2% | 1999 | 34,5% | 2015 | 35,6% |
| 1984 | 37,1% | 2000 | 35,2% | 2016 | 36% |
| 1985 | 36,9% | 2001 | 34,8% | 2017 | 36,4% |
| 1986 | 35,9% | 2002 | 33,9% | 2018 | 36,2% |
| 1987 | 34,7% | 2003 | 33,8% | 2019 | 35,9% |
| 1988 | 34,4% | 2004 | 34,7% | 2020 | 36,4% |
| 1989 | 34,1% | 2005 | 35,1% | 2021 | 37,4% |
| 1990 | 33,4% | 2006 | 35,4% | 2022 | 38,6% |
| 1991 | 33% | 2007 | 35,8% | 2023 | 38,1% |
| 1992 | 32,3% | 2008 | 35,6% | 2024 | 37,6% |
| 1993 | 31% | 2009 | 34,2% | 2025 | 38,3% |
| 1994 | 31,6% | 2010 | 35,2% | 2026 | 40% |
| 1995 | 32,5% | 2011 | 35,9% | | |
Tableau de données
| 1980 | 94,1 Md | 1996 | 292 Md | 2012 | 609 Md |
| 1981 | 109 Md | 1997 | 313 Md | 2013 | 649 Md |
| 1982 | 123 Md | 1998 | 341 Md | 2014 | 663 Md |
| 1983 | 131 Md | 1999 | 361 Md | 2015 | 685 Md |
| 1984 | 140 Md | 2000 | 388 Md | 2016 | 722 Md |
| 1985 | 153 Md | 2001 | 401 Md | 2017 | 762 Md |
| 1986 | 161 Md | 2002 | 404 Md | 2018 | 787 Md |
| 1987 | 173 Md | 2003 | 427 Md | 2019 | 810 Md |
| 1988 | 192 Md | 2004 | 461 Md | 2020 | 773 Md |
| 1989 | 210 Md | 2005 | 493 Md | 2021 | 868 Md |
| 1990 | 225 Md | 2006 | 524 Md | 2022 | 997 Md |
| 1991 | 234 Md | 2007 | 555 Md | 2023 | 1,05 Bn |
| 1992 | 237 Md | 2008 | 570 Md | 2024 | 1,09 Bn |
| 1993 | 240 Md | 2009 | 533 Md | 2025 | 1,16 Bn |
| 1994 | 257 Md | 2010 | 569 Md | 2026 | 1,25 Bn |
| 1995 | 278 Md | 2011 | 599 Md | | |
Tableau de données
| 1980 | 39% | 1996 | 35,6% | 2012 | 43,3% |
| 1981 | 41,3% | 1997 | 34,7% | 2013 | 41,6% |
| 1982 | 40,8% | 1998 | 34,3% | 2014 | 40,8% |
| 1983 | 40,1% | 1999 | 33,7% | 2015 | 40,1% |
| 1984 | 40,2% | 2000 | 33,8% | 2016 | 39,3% |
| 1985 | 39,4% | 2001 | 34,5% | 2017 | 38,8% |
| 1986 | 38,2% | 2002 | 35,8% | 2018 | 38,5% |
| 1987 | 36,4% | 2003 | 37% | 2019 | 38,3% |
| 1988 | 34,2% | 2004 | 37,9% | 2020 | 49,3% |
| 1989 | 33,6% | 2005 | 38,3% | 2021 | 44,9% |
| 1990 | 34,9% | 2006 | 38,2% | 2022 | 43,2% |
| 1991 | 35,7% | 2007 | 38,4% | 2023 | 44,2% |
| 1992 | 37,7% | 2008 | 40,6% | 2024 | 43,7% |
| 1993 | 37,6% | 2009 | 44,2% | 2025 | 43,6% |
| 1994 | 37,4% | 2010 | 44,5% | 2026 | 43,9% |
| 1995 | 37,5% | 2011 | 43,3% | | |
Tableau de données
| 1980 | 101 Md | 1996 | 325 Md | 2012 | 746 Md |
| 1981 | 120 Md | 1997 | 332 Md | 2013 | 744 Md |
| 1982 | 131 Md | 1998 | 344 Md | 2014 | 766 Md |
| 1983 | 141 Md | 1999 | 353 Md | 2015 | 773 Md |
| 1984 | 152 Md | 2000 | 373 Md | 2016 | 788 Md |
| 1985 | 163 Md | 2001 | 397 Md | 2017 | 815 Md |
| 1986 | 171 Md | 2002 | 428 Md | 2018 | 835 Md |
| 1987 | 181 Md | 2003 | 467 Md | 2019 | 863 Md |
| 1988 | 190 Md | 2004 | 502 Md | 2020 | 1,05 Bn |
| 1989 | 207 Md | 2005 | 537 Md | 2021 | 1,04 Bn |
| 1990 | 235 Md | 2006 | 564 Md | 2022 | 1,12 Bn |
| 1991 | 253 Md | 2007 | 596 Md | 2023 | 1,22 Bn |
| 1992 | 276 Md | 2008 | 651 Md | 2024 | 1,26 Bn |
| 1993 | 291 Md | 2009 | 689 Md | 2025 | 1,33 Bn |
| 1994 | 304 Md | 2010 | 719 Md | 2026 | 1,38 Bn |
| 1995 | 320 Md | 2011 | 723 Md | | |