Tableau de données
| 1980 | 43,6% | 1996 | 71,2% | 2012 | 65,7% |
| 1981 | 46,9% | 1997 | 65,7% | 2013 | 67,2% |
| 1982 | 52,4% | 1998 | 62,7% | 2014 | 67,2% |
| 1983 | 58,4% | 1999 | 58,6% | 2015 | 63,8% |
| 1984 | 61,9% | 2000 | 52,2% | 2016 | 60,9% |
| 1985 | 67,1% | 2001 | 49,4% | 2017 | 56% |
| 1986 | 68,9% | 2002 | 48,7% | 2018 | 51,6% |
| 1987 | 71,3% | 2003 | 49,8% | 2019 | 47,7% |
| 1988 | 73,7% | 2004 | 50,1% | 2020 | 53,4% |
| 1989 | 73,7% | 2005 | 49,6% | 2021 | 50,5% |
| 1990 | 75% | 2006 | 45% | 2022 | 48,4% |
| 1991 | 74,8% | 2007 | 42,7% | 2023 | 45,9% |
| 1992 | 75,6% | 2008 | 54,4% | 2024 | 43,7% |
| 1993 | 76,7% | 2009 | 56,3% | 2025 | 43,3% |
| 1994 | 73,5% | 2010 | 58,9% | 2026 | 44,1% |
| 1995 | 73% | 2011 | 61,2% | | |
Tableau de données
| 1980 | 76,1 Md | 1996 | 246 Md | 2012 | 432 Md |
| 1981 | 85,9 Md | 1997 | 243 Md | 2013 | 447 Md |
| 1982 | 100 Md | 1998 | 247 Md | 2014 | 456 Md |
| 1983 | 116 Md | 1999 | 246 Md | 2015 | 446 Md |
| 1984 | 128 Md | 2000 | 236 Md | 2016 | 438 Md |
| 1985 | 145 Md | 2001 | 239 Md | 2017 | 420 Md |
| 1986 | 154 Md | 2002 | 245 Md | 2018 | 406 Md |
| 1987 | 162 Md | 2003 | 256 Md | 2019 | 395 Md |
| 1988 | 175 Md | 2004 | 266 Md | 2020 | 436 Md |
| 1989 | 185 Md | 2005 | 274 Md | 2021 | 450 Md |
| 1990 | 199 Md | 2006 | 264 Md | 2022 | 481 Md |
| 1991 | 210 Md | 2007 | 266 Md | 2023 | 481 Md |
| 1992 | 221 Md | 2008 | 354 Md | 2024 | 491 Md |
| 1993 | 230 Md | 2009 | 355 Md | 2025 | 511 Md |
| 1994 | 232 Md | 2010 | 379 Md | 2026 | 543 Md |
| 1995 | 241 Md | 2011 | 401 Md | | |
Tableau de données
| 1995 | 55,8% | 2006 | 37,2% | 2017 | 46,1% |
| 1996 | 54,9% | 2007 | 34,4% | 2018 | 42,5% |
| 1997 | 51,7% | 2008 | 39,8% | 2019 | 39,3% |
| 1998 | 49% | 2009 | 42,3% | 2020 | 44% |
| 1999 | 45,8% | 2010 | 46,1% | 2021 | 41,6% |
| 2000 | 40,3% | 2011 | 48,7% | 2022 | 39,9% |
| 2001 | 38,9% | 2012 | 52,3% | 2023 | 37,8% |
| 2002 | 39,1% | 2013 | 54% | 2024 | 36% |
| 2003 | 40,8% | 2014 | 54,9% | 2025 | 35,7% |
| 2004 | 41,5% | 2015 | 53% | 2026 | 36,4% |
| 2005 | 39,9% | 2016 | 51% | | |
Tableau de données
| 1995 | 184 Md | 2006 | 219 Md | 2017 | 346 Md |
| 1996 | 189 Md | 2007 | 214 Md | 2018 | 334 Md |
| 1997 | 191 Md | 2008 | 259 Md | 2019 | 326 Md |
| 1998 | 193 Md | 2009 | 267 Md | 2020 | 359 Md |
| 1999 | 192 Md | 2010 | 297 Md | 2021 | 371 Md |
| 2000 | 182 Md | 2011 | 319 Md | 2022 | 396 Md |
| 2001 | 188 Md | 2012 | 344 Md | 2023 | 397 Md |
| 2002 | 197 Md | 2013 | 359 Md | 2024 | 405 Md |
| 2003 | 210 Md | 2014 | 373 Md | 2025 | 421 Md |
| 2004 | 221 Md | 2015 | 370 Md | 2026 | 447 Md |
| 2005 | 221 Md | 2016 | 368 Md | | |