Tableau de données
| 1990 | 53,2% | 2003 | 35,2% | 2016 | 30,9% |
| 1991 | 55% | 2004 | 47,6% | 2017 | 27,8% |
| 1992 | 51,5% | 2005 | 38,8% | 2018 | 31,2% |
| 1993 | 53,3% | 2006 | 37,9% | 2019 | 33,5% |
| 1994 | 48% | 2007 | 39,8% | 2020 | 32,6% |
| 1995 | 46,5% | 2008 | 33% | 2021 | 29,6% |
| 1996 | 46,4% | 2009 | 50,6% | 2022 | 34,7% |
| 1997 | 38,2% | 2010 | 36,6% | 2023 | 32,2% |
| 1998 | 48,1% | 2011 | 33,7% | 2024 | 26,7% |
| 1999 | 38% | 2012 | 39,5% | 2025 | 26,1% |
| 2000 | 34,4% | 2013 | 47,6% | 2026 | 25,5% |
| 2001 | 36,6% | 2014 | 45,7% | | |
| 2002 | 39,5% | 2015 | 57% | | |
Tableau de données
| 1990 | 12,1 Md | 2003 | 30,4 Md | 2016 | 171 Md |
| 1991 | 11,2 Md | 2004 | 53,1 Md | 2017 | 163 Md |
| 1992 | 12 Md | 2005 | 63 Md | 2018 | 208 Md |
| 1993 | 11,3 Md | 2006 | 81 Md | 2019 | 215 Md |
| 1994 | 10,4 Md | 2007 | 110 Md | 2020 | 171 Md |
| 1995 | 11,6 Md | 2008 | 135 Md | 2021 | 194 Md |
| 1996 | 13,1 Md | 2009 | 162 Md | 2022 | 298 Md |
| 1997 | 13,9 Md | 2010 | 159 Md | 2023 | 255 Md |
| 1998 | 14,9 Md | 2011 | 206 Md | 2024 | 213 Md |
| 1999 | 15,6 Md | 2012 | 269 Md | 2025 | 210 Md |
| 2000 | 22,7 Md | 2013 | 344 Md | 2026 | 202 Md |
| 2001 | 23,3 Md | 2014 | 343 Md | | |
| 2002 | 27,8 Md | 2015 | 336 Md | | |
Tableau de données
| 1990 | 50% | 2003 | 28,5% | 2016 | 40,1% |
| 1991 | 57,5% | 2004 | 29,9% | 2017 | 34,7% |
| 1992 | 54,2% | 2005 | 29% | 2018 | 28,9% |
| 1993 | 62,8% | 2006 | 29,5% | 2019 | 32,5% |
| 1994 | 59,8% | 2007 | 29,5% | 2020 | 34,7% |
| 1995 | 52,2% | 2008 | 23,5% | 2021 | 29,4% |
| 1996 | 55,2% | 2009 | 36,4% | 2022 | 24,3% |
| 1997 | 47,6% | 2010 | 32% | 2023 | 26,7% |
| 1998 | 55,1% | 2011 | 28,5% | 2024 | 26% |
| 1999 | 42,4% | 2012 | 31% | 2025 | 27,1% |
| 2000 | 29,8% | 2013 | 28,3% | 2026 | 29% |
| 2001 | 32,1% | 2014 | 32,3% | | |
| 2002 | 31,6% | 2015 | 38,6% | | |
Tableau de données
| 1990 | 11,4 Md | 2003 | 24,6 Md | 2016 | 222 Md |
| 1991 | 11,7 Md | 2004 | 33,4 Md | 2017 | 203 Md |
| 1992 | 12,6 Md | 2005 | 47,1 Md | 2018 | 193 Md |
| 1993 | 13,3 Md | 2006 | 63,1 Md | 2019 | 208 Md |
| 1994 | 12,9 Md | 2007 | 81,5 Md | 2020 | 182 Md |
| 1995 | 13 Md | 2008 | 96,5 Md | 2021 | 192 Md |
| 1996 | 15,6 Md | 2009 | 117 Md | 2022 | 209 Md |
| 1997 | 17,3 Md | 2010 | 139 Md | 2023 | 211 Md |
| 1998 | 17 Md | 2011 | 174 Md | 2024 | 208 Md |
| 1999 | 17,4 Md | 2012 | 211 Md | 2025 | 218 Md |
| 2000 | 19,6 Md | 2013 | 205 Md | 2026 | 229 Md |
| 2001 | 20,5 Md | 2014 | 243 Md | | |
| 2002 | 22,2 Md | 2015 | 227 Md | | |