Tableau de données
| 1985 | 79,5% | 1999 | 72,3% | 2013 | 78,8% |
| 1986 | 94,5% | 2000 | 82% | 2014 | 74,8% |
| 1987 | 67,5% | 2001 | 86,1% | 2015 | 71,6% |
| 1988 | 77,6% | 2002 | 73,4% | 2016 | 66,9% |
| 1989 | 73% | 2003 | 65% | 2017 | 67,1% |
| 1990 | 72,6% | 2004 | 67,5% | 2018 | 68,6% |
| 1991 | 63,6% | 2005 | 67,5% | 2019 | 63,2% |
| 1992 | 49,3% | 2006 | 60% | 2020 | 63% |
| 1993 | 54,8% | 2007 | 67,3% | 2021 | 58,3% |
| 1994 | 59,2% | 2008 | 62% | 2022 | 69,6% |
| 1995 | 63,4% | 2009 | 73,9% | 2023 | 76,5% |
| 1996 | 66,7% | 2010 | 77,1% | 2024 | 74% |
| 1997 | 72,9% | 2011 | 78,2% | 2025 | 78,5% |
| 1998 | 70,8% | 2012 | 78,6% | 2026 | 76,5% |
Tableau de données
| 1985 | 5,13 Md | 1999 | 6,63 Md | 2013 | 38,9 Md |
| 1986 | 4,91 Md | 2000 | 9,49 Md | 2014 | 34,6 Md |
| 1987 | 4,21 Md | 2001 | 9,21 Md | 2015 | 24,7 Md |
| 1988 | 4,48 Md | 2002 | 8,51 Md | 2016 | 22,1 Md |
| 1989 | 5,22 Md | 2003 | 9,28 Md | 2017 | 24,6 Md |
| 1990 | 3,87 Md | 2004 | 11,8 Md | 2018 | 28,7 Md |
| 1991 | 1,99 Md | 2005 | 15,9 Md | 2019 | 27 Md |
| 1992 | 2,87 Md | 2006 | 17,7 Md | 2020 | 21,4 Md |
| 1993 | 3,96 Md | 2007 | 21,9 Md | 2021 | 26,1 Md |
| 1994 | 4,37 Md | 2008 | 24,6 Md | 2022 | 39,1 Md |
| 1995 | 5,14 Md | 2009 | 22,5 Md | 2023 | 38,9 Md |
| 1996 | 6,29 Md | 2010 | 25,5 Md | 2024 | 36,5 Md |
| 1997 | 6,71 Md | 2011 | 33,3 Md | 2025 | 38 Md |
| 1998 | 5,6 Md | 2012 | 38,3 Md | 2026 | 40,5 Md |
Tableau de données
| 1985 | 50,2% | 1999 | 44,3% | 2013 | 38,4% |
| 1986 | 56,6% | 2000 | 29,7% | 2014 | 45% |
| 1987 | 44,2% | 2001 | 41,2% | 2015 | 55,3% |
| 1988 | 50,1% | 2002 | 42,6% | 2016 | 54% |
| 1989 | 43,3% | 2003 | 38% | 2017 | 51,9% |
| 1990 | 122,4% | 2004 | 35,2% | 2018 | 51% |
| 1991 | 208,1% | 2005 | 28,7% | 2019 | 50,2% |
| 1992 | 77,4% | 2006 | 32,2% | 2020 | 62,9% |
| 1993 | 58% | 2007 | 30,4% | 2021 | 48,3% |
| 1994 | 57,5% | 2008 | 40,8% | 2022 | 39,6% |
| 1995 | 51,7% | 2009 | 42,8% | 2023 | 48,3% |
| 1996 | 42,5% | 2010 | 45,4% | 2024 | 48% |
| 1997 | 43,5% | 2011 | 39,6% | 2025 | 50,1% |
| 1998 | 51,4% | 2012 | 38,1% | 2026 | 48,9% |
Tableau de données
| 1985 | 3,24 Md | 1999 | 4,06 Md | 2013 | 19 Md |
| 1986 | 2,95 Md | 2000 | 3,44 Md | 2014 | 20,8 Md |
| 1987 | 2,76 Md | 2001 | 4,41 Md | 2015 | 19,1 Md |
| 1988 | 2,89 Md | 2002 | 4,93 Md | 2016 | 17,9 Md |
| 1989 | 3,09 Md | 2003 | 5,42 Md | 2017 | 19 Md |
| 1990 | 6,52 Md | 2004 | 6,17 Md | 2018 | 21,4 Md |
| 1991 | 6,52 Md | 2005 | 6,77 Md | 2019 | 21,5 Md |
| 1992 | 4,51 Md | 2006 | 9,49 Md | 2020 | 21,4 Md |
| 1993 | 4,2 Md | 2007 | 9,9 Md | 2021 | 21,6 Md |
| 1994 | 4,25 Md | 2008 | 16,2 Md | 2022 | 22,2 Md |
| 1995 | 4,19 Md | 2009 | 13 Md | 2023 | 24,6 Md |
| 1996 | 4,01 Md | 2010 | 15 Md | 2024 | 23,7 Md |
| 1997 | 4,01 Md | 2011 | 16,8 Md | 2025 | 24,2 Md |
| 1998 | 4,07 Md | 2012 | 18,6 Md | 2026 | 25,9 Md |