Tableau de données
| 1980 | 3,53 Md | 1996 | 2,4 Md | 2012 | 9,41 Md |
| 1981 | 3,06 Md | 1997 | 2,29 Md | 2013 | 10,2 Md |
| 1982 | 2,84 Md | 1998 | 2,64 Md | 2014 | 10,8 Md |
| 1983 | 2,54 Md | 1999 | 2,53 Md | 2015 | 9,68 Md |
| 1984 | 2,06 Md | 2000 | 2,24 Md | 2016 | 10,4 Md |
| 1985 | 2,03 Md | 2001 | 2,44 Md | 2017 | 11,2 Md |
| 1986 | 2,68 Md | 2002 | 2,77 Md | 2018 | 12,8 Md |
| 1987 | 3,14 Md | 2003 | 3,38 Md | 2019 | 12,9 Md |
| 1988 | 3,21 Md | 2004 | 3,75 Md | 2020 | 13,8 Md |
| 1989 | 3,07 Md | 2005 | 4,37 Md | 2021 | 14,9 Md |
| 1990 | 3,49 Md | 2006 | 4,74 Md | 2022 | 15,5 Md |
| 1991 | 3,27 Md | 2007 | 5,72 Md | 2023 | 16,8 Md |
| 1992 | 3,37 Md | 2008 | 7,28 Md | 2024 | 19,9 Md |
| 1993 | 3,04 Md | 2009 | 7,32 Md | 2025 | 21,8 Md |
| 1994 | 1,94 Md | 2010 | 7,84 Md | 2026 | 24,8 Md |
| 1995 | 2,3 Md | 2011 | 8,75 Md | | |
Tableau de données
| 1980 | 746 Md | 1996 | 1,23 Bn | 2012 | 4,8 Bn |
| 1981 | 830 Md | 1997 | 1,33 Bn | 2013 | 5,04 Bn |
| 1982 | 933 Md | 1998 | 1,55 Bn | 2014 | 5,35 Bn |
| 1983 | 967 Md | 1999 | 1,56 Bn | 2015 | 5,72 Bn |
| 1984 | 899 Md | 2000 | 1,59 Bn | 2016 | 6,14 Bn |
| 1985 | 911 Md | 2001 | 1,79 Bn | 2017 | 6,49 Bn |
| 1986 | 928 Md | 2002 | 1,92 Bn | 2018 | 7,11 Bn |
| 1987 | 945 Md | 2003 | 1,96 Bn | 2019 | 7,57 Bn |
| 1988 | 956 Md | 2004 | 1,98 Bn | 2020 | 7,91 Bn |
| 1989 | 979 Md | 2005 | 2,3 Bn | 2021 | 8,27 Bn |
| 1990 | 950 Md | 2006 | 2,48 Bn | 2022 | 9,62 Bn |
| 1991 | 923 Md | 2007 | 2,74 Bn | 2023 | 10,19 Bn |
| 1992 | 893 Md | 2008 | 3,25 Bn | 2024 | 12,04 Bn |
| 1993 | 861 Md | 2009 | 3,45 Bn | 2025 | 12,68 Bn |
| 1994 | 1,07 Bn | 2010 | 3,88 Bn | 2026 | 13,81 Bn |
| 1995 | 1,15 Bn | 2011 | 4,13 Bn | | |
Tableau de données
| 1980 | 2,29 Bn | 1996 | 2,43 Bn | 2012 | 4,88 Bn |
| 1981 | 2,29 Bn | 1997 | 2,47 Bn | 2013 | 5,14 Bn |
| 1982 | 2,34 Bn | 1998 | 2,71 Bn | 2014 | 5,48 Bn |
| 1983 | 2,25 Bn | 1999 | 2,71 Bn | 2015 | 5,73 Bn |
| 1984 | 1,87 Bn | 2000 | 2,67 Bn | 2016 | 6,05 Bn |
| 1985 | 2,01 Bn | 2001 | 2,87 Bn | 2017 | 6,36 Bn |
| 1986 | 2,14 Bn | 2002 | 3,01 Bn | 2018 | 6,8 Bn |
| 1987 | 2,14 Bn | 2003 | 3,07 Bn | 2019 | 7,22 Bn |
| 1988 | 2,29 Bn | 2004 | 3,09 Bn | 2020 | 7,48 Bn |
| 1989 | 2,31 Bn | 2005 | 3,31 Bn | 2021 | 7,58 Bn |
| 1990 | 2,28 Bn | 2006 | 3,51 Bn | 2022 | 8,48 Bn |
| 1991 | 2,27 Bn | 2007 | 3,62 Bn | 2023 | 8,68 Bn |
| 1992 | 2,32 Bn | 2008 | 3,9 Bn | 2024 | 9,57 Bn |
| 1993 | 2,33 Bn | 2009 | 3,97 Bn | 2025 | 10,23 Bn |
| 1994 | 2,37 Bn | 2010 | 4,32 Bn | 2026 | 10,92 Bn |
| 1995 | 2,43 Bn | 2011 | 4,42 Bn | | |