Tableau de données
| 1980 | 2,39 Md | 1996 | 2,91 Md | 2012 | 12,6 Md |
| 1981 | 2,08 Md | 1997 | 2,75 Md | 2013 | 13,4 Md |
| 1982 | 1,93 Md | 1998 | 3,16 Md | 2014 | 13,9 Md |
| 1983 | 1,77 Md | 1999 | 3,39 Md | 2015 | 11,8 Md |
| 1984 | 1,58 Md | 2000 | 2,96 Md | 2016 | 12,8 Md |
| 1985 | 1,75 Md | 2001 | 3,19 Md | 2017 | 14,1 Md |
| 1986 | 2,29 Md | 2002 | 3,62 Md | 2018 | 15,9 Md |
| 1987 | 2,67 Md | 2003 | 4,74 Md | 2019 | 16,1 Md |
| 1988 | 2,94 Md | 2004 | 5,45 Md | 2020 | 17,8 Md |
| 1989 | 2,94 Md | 2005 | 6,15 Md | 2021 | 19,7 Md |
| 1990 | 3,49 Md | 2006 | 6,55 Md | 2022 | 18,7 Md |
| 1991 | 3,53 Md | 2007 | 7,63 Md | 2023 | 20,1 Md |
| 1992 | 3,78 Md | 2008 | 9,45 Md | 2024 | 23,1 Md |
| 1993 | 3,6 Md | 2009 | 9,44 Md | 2025 | 27,1 Md |
| 1994 | 2,16 Md | 2010 | 10,1 Md | 2026 | 32,5 Md |
| 1995 | 2,68 Md | 2011 | 12,1 Md | | |
Tableau de données
| 1980 | 504 Md | 1996 | 1,49 Bn | 2012 | 6,41 Bn |
| 1981 | 564 Md | 1997 | 1,61 Bn | 2013 | 6,64 Bn |
| 1982 | 635 Md | 1998 | 1,86 Bn | 2014 | 6,88 Bn |
| 1983 | 673 Md | 1999 | 2,09 Bn | 2015 | 7 Bn |
| 1984 | 690 Md | 2000 | 2,11 Bn | 2016 | 7,6 Bn |
| 1985 | 784 Md | 2001 | 2,34 Bn | 2017 | 8,19 Bn |
| 1986 | 793 Md | 2002 | 2,51 Bn | 2018 | 8,84 Bn |
| 1987 | 801 Md | 2003 | 2,75 Bn | 2019 | 9,43 Bn |
| 1988 | 876 Md | 2004 | 2,87 Bn | 2020 | 10,25 Bn |
| 1989 | 938 Md | 2005 | 3,24 Bn | 2021 | 10,92 Bn |
| 1990 | 950 Md | 2006 | 3,42 Bn | 2022 | 11,62 Bn |
| 1991 | 995 Md | 2007 | 3,65 Bn | 2023 | 12,2 Bn |
| 1992 | 999 Md | 2008 | 4,22 Bn | 2024 | 14,02 Bn |
| 1993 | 1,02 Bn | 2009 | 4,44 Bn | 2025 | 15,76 Bn |
| 1994 | 1,18 Bn | 2010 | 5 Bn | 2026 | 18,09 Bn |
| 1995 | 1,34 Bn | 2011 | 5,69 Bn | | |
Tableau de données
| 1980 | 1,34 Bn | 1996 | 2,42 Bn | 2012 | 6,1 Bn |
| 1981 | 1,37 Bn | 1997 | 2,57 Bn | 2013 | 6,45 Bn |
| 1982 | 1,39 Bn | 1998 | 2,76 Bn | 2014 | 6,73 Bn |
| 1983 | 1,38 Bn | 1999 | 2,96 Bn | 2015 | 7 Bn |
| 1984 | 1,4 Bn | 2000 | 3,02 Bn | 2016 | 7,41 Bn |
| 1985 | 1,56 Bn | 2001 | 3,22 Bn | 2017 | 7,87 Bn |
| 1986 | 1,68 Bn | 2002 | 3,36 Bn | 2018 | 8,39 Bn |
| 1987 | 1,68 Bn | 2003 | 3,62 Bn | 2019 | 8,89 Bn |
| 1988 | 1,77 Bn | 2004 | 3,78 Bn | 2020 | 9,06 Bn |
| 1989 | 1,81 Bn | 2005 | 4,11 Bn | 2021 | 9,69 Bn |
| 1990 | 1,8 Bn | 2006 | 4,37 Bn | 2022 | 9,85 Bn |
| 1991 | 1,96 Bn | 2007 | 4,55 Bn | 2023 | 10,15 Bn |
| 1992 | 1,97 Bn | 2008 | 4,81 Bn | 2024 | 10,63 Bn |
| 1993 | 2,04 Bn | 2009 | 4,95 Bn | 2025 | 11,17 Bn |
| 1994 | 2,06 Bn | 2010 | 5,37 Bn | 2026 | 11,71 Bn |
| 1995 | 2,18 Bn | 2011 | 5,73 Bn | | |