Tableau de données
| 1990 | 78,9% | 2002 | 96,3% | 2014 | 69,6% |
| 1991 | 80,5% | 2003 | 86,5% | 2015 | 76,3% |
| 1992 | 77,9% | 2004 | 86,5% | 2016 | 75% |
| 1993 | 79,2% | 2005 | 76,6% | 2017 | 72,3% |
| 1994 | 77,9% | 2006 | 74,3% | 2018 | 83,6% |
| 1995 | 77,8% | 2007 | 71,8% | 2019 | 82,6% |
| 1996 | 76,2% | 2008 | 68,8% | 2020 | 96,9% |
| 1997 | 70,1% | 2009 | 72,8% | 2021 | 102,7% |
| 1998 | 74,2% | 2010 | 68,7% | 2022 | 115,9% |
| 1999 | 77,7% | 2011 | 69,4% | 2023 | 110,4% |
| 2000 | 79,2% | 2012 | 67,5% | 2024 | 100,8% |
| 2001 | 84,4% | 2013 | 69,5% | | |
Tableau de données
| 1990 | 311 Md | 2002 | 1,86 Bn | 2014 | 7,5 Bn |
| 1991 | 367 Md | 2003 | 1,86 Bn | 2015 | 8,83 Bn |
| 1992 | 406 Md | 2004 | 2,14 Bn | 2016 | 9,61 Bn |
| 1993 | 484 Md | 2005 | 2,22 Bn | 2017 | 10,4 Bn |
| 1994 | 552 Md | 2006 | 2,58 Bn | 2018 | 12,83 Bn |
| 1995 | 636 Md | 2007 | 3,04 Bn | 2019 | 13,14 Bn |
| 1996 | 716 Md | 2008 | 3,59 Bn | 2020 | 15,16 Bn |
| 1997 | 764 Md | 2009 | 4,16 Bn | 2021 | 18,08 Bn |
| 1998 | 925 Md | 2010 | 4,56 Bn | 2022 | 27,9 Bn |
| 1999 | 1,05 Bn | 2011 | 5,2 Bn | 2023 | 30,26 Bn |
| 2000 | 1,22 Bn | 2012 | 6,07 Bn | 2024 | 30,15 Bn |
| 2001 | 1,45 Bn | 2013 | 6,9 Bn | | |