Tableau de données
| 1980 | 12,7% | 1996 | 12,8% | 2012 | 24,7% |
| 1981 | 16,4% | 1997 | 14,7% | 2013 | 29,2% |
| 1982 | 23,4% | 1998 | 13,9% | 2014 | 30% |
| 1983 | 19,6% | 1999 | 15,3% | 2015 | 25,6% |
| 1984 | 17,5% | 2000 | 15,9% | 2016 | 23,7% |
| 1985 | 11,4% | 2001 | 16,3% | 2017 | 26,6% |
| 1986 | 12,1% | 2002 | 15,3% | 2018 | 25,5% |
| 1987 | 15,6% | 2003 | 16% | 2019 | 29,7% |
| 1988 | 20,6% | 2004 | 14,6% | 2020 | 27,7% |
| 1989 | 22,8% | 2005 | 14,9% | 2021 | 26,9% |
| 1990 | 16,5% | 2006 | 17,1% | 2022 | 27,7% |
| 1991 | 15,3% | 2007 | 18,7% | 2023 | 29,1% |
| 1992 | 19,2% | 2008 | 19,4% | 2024 | 27,1% |
| 1993 | 18,1% | 2009 | 21,3% | 2025 | 26,3% |
| 1994 | 18,9% | 2010 | 23,2% | 2026 | 26,5% |
| 1995 | 16,3% | 2011 | 24,6% | | |
Tableau de données
| 1980 | 21 M | 1996 | 5,83 Md | 2012 | 117 Md |
| 1981 | 21 M | 1997 | 8,29 Md | 2013 | 151 Md |
| 1982 | 32 M | 1998 | 9,14 Md | 2014 | 169 Md |
| 1983 | 26 M | 1999 | 12,3 Md | 2015 | 166 Md |
| 1984 | 25 M | 2000 | 14,4 Md | 2016 | 180 Md |
| 1985 | 22 M | 2001 | 19,1 Md | 2017 | 224 Md |
| 1986 | 26 M | 2002 | 21,5 Md | 2018 | 231 Md |
| 1987 | 108 M | 2003 | 25 Md | 2019 | 288 Md |
| 1988 | 229 M | 2004 | 26,2 Md | 2020 | 274 Md |
| 1989 | 398 M | 2005 | 30,5 Md | 2021 | 285 Md |
| 1990 | 545 M | 2006 | 41,3 Md | 2022 | 334 Md |
| 1991 | 847 M | 2007 | 52,3 Md | 2023 | 389 Md |
| 1992 | 1,35 Md | 2008 | 60,9 Md | 2024 | 393 Md |
| 1993 | 2,03 Md | 2009 | 72 Md | 2025 | 377 Md |
| 1994 | 3,38 Md | 2010 | 90 Md | 2026 | 400 Md |
| 1995 | 4,5 Md | 2011 | 104 Md | | |
Tableau de données
| 1980 | 14,2% | 1996 | 14,9% | 2012 | 28,1% |
| 1981 | 23,8% | 1997 | 16,5% | 2013 | 31,7% |
| 1982 | 27% | 1998 | 14,9% | 2014 | 39,7% |
| 1983 | 35,3% | 1999 | 15,6% | 2015 | 32,2% |
| 1984 | 30,9% | 2000 | 17,2% | 2016 | 28,7% |
| 1985 | 21% | 2001 | 20,8% | 2017 | 28,6% |
| 1986 | 24,2% | 2002 | 18,6% | 2018 | 31,2% |
| 1987 | 22,9% | 2003 | 18,6% | 2019 | 28% |
| 1988 | 27% | 2004 | 17,8% | 2020 | 33,9% |
| 1989 | 27% | 2005 | 17% | 2021 | 32,1% |
| 1990 | 21% | 2006 | 20,1% | 2022 | 32,9% |
| 1991 | 17,3% | 2007 | 20,9% | 2023 | 33,3% |
| 1992 | 21,1% | 2008 | 21,3% | 2024 | 33,3% |
| 1993 | 20,7% | 2009 | 25,7% | 2025 | 30,3% |
| 1994 | 22,9% | 2010 | 26,6% | 2026 | 32,9% |
| 1995 | 18,8% | 2011 | 28,9% | | |
Tableau de données
| 1980 | 23 M | 1996 | 6,77 Md | 2012 | 133 Md |
| 1981 | 30 M | 1997 | 9,31 Md | 2013 | 164 Md |
| 1982 | 37 M | 1998 | 9,85 Md | 2014 | 224 Md |
| 1983 | 47 M | 1999 | 12,5 Md | 2015 | 208 Md |
| 1984 | 45 M | 2000 | 15,5 Md | 2016 | 219 Md |
| 1985 | 41 M | 2001 | 24,3 Md | 2017 | 241 Md |
| 1986 | 52 M | 2002 | 26,2 Md | 2018 | 282 Md |
| 1987 | 159 M | 2003 | 29,1 Md | 2019 | 272 Md |
| 1988 | 301 M | 2004 | 31,8 Md | 2020 | 335 Md |
| 1989 | 472 M | 2005 | 34,7 Md | 2021 | 340 Md |
| 1990 | 690 M | 2006 | 48,6 Md | 2022 | 397 Md |
| 1991 | 958 M | 2007 | 58,4 Md | 2023 | 446 Md |
| 1992 | 1,48 Md | 2008 | 66,9 Md | 2024 | 484 Md |
| 1993 | 2,31 Md | 2009 | 86,7 Md | 2025 | 433 Md |
| 1994 | 4,1 Md | 2010 | 103 Md | 2026 | 498 Md |
| 1995 | 5,18 Md | 2011 | 123 Md | | |