Tableau de données
| 1980 | 34,4% | 1996 | 41,1% | 2012 | 44,6% |
| 1981 | 35,7% | 1997 | 41,4% | 2013 | 44,7% |
| 1982 | 36,7% | 1998 | 39,8% | 2014 | 45,9% |
| 1983 | 34,9% | 1999 | 46,1% | 2015 | 42,9% |
| 1984 | 36% | 2000 | 45,7% | 2016 | 58,5% |
| 1985 | 34,5% | 2001 | 46,7% | 2017 | 45,1% |
| 1986 | 34,6% | 2002 | 42,8% | 2018 | 44,4% |
| 1987 | 34,7% | 2003 | 45,1% | 2019 | 41,6% |
| 1988 | 38,3% | 2004 | 46,6% | 2020 | 41,6% |
| 1989 | 37,5% | 2005 | 49,2% | 2021 | 40,7% |
| 1990 | 38,3% | 2006 | 50,8% | 2022 | 42,3% |
| 1991 | 41% | 2007 | 49,8% | 2023 | 42,9% |
| 1992 | 41,5% | 2008 | 50,8% | 2024 | 43,4% |
| 1993 | 39,5% | 2009 | 44,8% | 2025 | 42,2% |
| 1994 | 39,1% | 2010 | 41,7% | 2026 | 43,1% |
| 1995 | 40,2% | 2011 | 43,6% | | |
Tableau de données
| 1980 | 5,82 Md | 1996 | 210 Md | 2012 | 834 Md |
| 1981 | 9,39 Md | 1997 | 227 Md | 2013 | 887 Md |
| 1982 | 15,2 Md | 1998 | 244 Md | 2014 | 968 Md |
| 1983 | 24,9 Md | 1999 | 304 Md | 2015 | 1 Bn |
| 1984 | 33,9 Md | 2000 | 329 Md | 2016 | 1,49 Bn |
| 1985 | 44,4 Md | 2001 | 379 Md | 2017 | 1,21 Bn |
| 1986 | 58,7 Md | 2002 | 369 Md | 2018 | 1,28 Bn |
| 1987 | 77 Md | 2003 | 400 Md | 2019 | 1,27 Bn |
| 1988 | 105 Md | 2004 | 456 Md | 2020 | 1,24 Bn |
| 1989 | 126 Md | 2005 | 531 Md | 2021 | 1,36 Bn |
| 1990 | 150 Md | 2006 | 629 Md | 2022 | 1,67 Bn |
| 1991 | 173 Md | 2007 | 700 Md | 2023 | 1,87 Bn |
| 1992 | 175 Md | 2008 | 816 Md | 2024 | 1,99 Bn |
| 1993 | 172 Md | 2009 | 733 Md | 2025 | 2,09 Bn |
| 1994 | 181 Md | 2010 | 709 Md | 2026 | 2,31 Bn |
| 1995 | 192 Md | 2011 | 778 Md | | |
Tableau de données
| 1980 | 33,1% | 1996 | 42,5% | 2012 | 47,2% |
| 1981 | 34,4% | 1997 | 41,4% | 2013 | 45,6% |
| 1982 | 35% | 1998 | 40,3% | 2014 | 45,3% |
| 1983 | 36,8% | 1999 | 44,8% | 2015 | 43% |
| 1984 | 33,8% | 2000 | 44,3% | 2016 | 45,8% |
| 1985 | 36% | 2001 | 47% | 2017 | 43,8% |
| 1986 | 38,4% | 2002 | 45% | 2018 | 43,4% |
| 1987 | 35,5% | 2003 | 47,3% | 2019 | 43% |
| 1988 | 40,2% | 2004 | 46,2% | 2020 | 50,4% |
| 1989 | 41,7% | 2005 | 44,2% | 2021 | 48,7% |
| 1990 | 41,4% | 2006 | 44,3% | 2022 | 46,2% |
| 1991 | 41,6% | 2007 | 44,2% | 2023 | 45,2% |
| 1992 | 43,3% | 2008 | 62,8% | 2024 | 47,1% |
| 1993 | 43,7% | 2009 | 53,4% | 2025 | 45% |
| 1994 | 43,6% | 2010 | 48,2% | 2026 | 44,2% |
| 1995 | 43% | 2011 | 50% | | |
Tableau de données
| 1980 | 5,6 Md | 1996 | 217 Md | 2012 | 882 Md |
| 1981 | 9,05 Md | 1997 | 227 Md | 2013 | 905 Md |
| 1982 | 14,5 Md | 1998 | 247 Md | 2014 | 956 Md |
| 1983 | 26,3 Md | 1999 | 295 Md | 2015 | 1,01 Bn |
| 1984 | 31,8 Md | 2000 | 318 Md | 2016 | 1,17 Bn |
| 1985 | 46,3 Md | 2001 | 381 Md | 2017 | 1,17 Bn |
| 1986 | 65,2 Md | 2002 | 388 Md | 2018 | 1,25 Bn |
| 1987 | 78,6 Md | 2003 | 420 Md | 2019 | 1,32 Bn |
| 1988 | 110 Md | 2004 | 453 Md | 2020 | 1,5 Bn |
| 1989 | 140 Md | 2005 | 478 Md | 2021 | 1,62 Bn |
| 1990 | 162 Md | 2006 | 550 Md | 2022 | 1,82 Bn |
| 1991 | 176 Md | 2007 | 622 Md | 2023 | 1,98 Bn |
| 1992 | 183 Md | 2008 | 1,01 Bn | 2024 | 2,16 Bn |
| 1993 | 190 Md | 2009 | 872 Md | 2025 | 2,23 Bn |
| 1994 | 201 Md | 2010 | 821 Md | 2026 | 2,38 Bn |
| 1995 | 205 Md | 2011 | 893 Md | | |