Tableau de données
| 1980 | 2,71 Md | 1996 | 2,19 Md | 2012 | 5,75 Md |
| 1981 | 2,9 Md | 1997 | 1,97 Md | 2013 | 6,74 Md |
| 1982 | 3,26 Md | 1998 | 1,56 Md | 2014 | 6,52 Md |
| 1983 | 2,84 Md | 1999 | 1,56 Md | 2015 | 6,75 Md |
| 1984 | 3,28 Md | 2000 | 1,5 Md | 2016 | 6,04 Md |
| 1985 | 2,79 Md | 2001 | 1,73 Md | 2017 | 5,82 Md |
| 1986 | 2,09 Md | 2002 | 1,99 Md | 2018 | 6,39 Md |
| 1987 | 1,82 Md | 2003 | 2,22 Md | 2019 | 6,52 Md |
| 1988 | 2,99 Md | 2004 | 2,34 Md | 2020 | 6,68 Md |
| 1989 | 2,75 Md | 2005 | 2,74 Md | 2021 | 7,17 Md |
| 1990 | 1,51 Md | 2006 | 3,14 Md | 2022 | 7,12 Md |
| 1991 | 1,81 Md | 2007 | 3,45 Md | 2023 | 6,4 Md |
| 1992 | 1,58 Md | 2008 | 3,93 Md | 2024 | 6,97 Md |
| 1993 | 1,79 Md | 2009 | 3,8 Md | 2025 | 7,71 Md |
| 1994 | 2,12 Md | 2010 | 4,17 Md | 2026 | 8,27 Md |
| 1995 | 2,03 Md | 2011 | 4,8 Md | | |
Tableau de données
| 1980 | 2,84 Md | 1996 | 2,01 Bn | 2012 | 24,96 Bn |
| 1981 | 3,37 Md | 1997 | 1,94 Bn | 2013 | 29,21 Bn |
| 1982 | 4,04 Md | 1998 | 2,44 Bn | 2014 | 29,55 Bn |
| 1983 | 5,35 Md | 1999 | 2,81 Bn | 2015 | 34,26 Bn |
| 1984 | 8,24 Md | 2000 | 3,09 Bn | 2016 | 37,97 Bn |
| 1985 | 14,2 Md | 2001 | 3,45 Bn | 2017 | 42,99 Bn |
| 1986 | 33,7 Md | 2002 | 4,19 Bn | 2018 | 50,69 Bn |
| 1987 | 62,1 Md | 2003 | 5,23 Bn | 2019 | 58,78 Bn |
| 1988 | 97,2 Md | 2004 | 6,36 Bn | 2020 | 65,75 Bn |
| 1989 | 164 Md | 2005 | 7,92 Bn | 2021 | 74,82 Bn |
| 1990 | 229 Md | 2006 | 9,32 Bn | 2022 | 100,04 Bn |
| 1991 | 535 Md | 2007 | 10,3 Bn | 2023 | 136,69 Bn |
| 1992 | 789 Md | 2008 | 11,68 Bn | 2024 | 157,46 Bn |
| 1993 | 1,01 Bn | 2009 | 12,85 Bn | 2025 | 174,68 Bn |
| 1994 | 1,24 Bn | 2010 | 16,6 Bn | 2026 | 193,46 Bn |
| 1995 | 1,53 Bn | 2011 | 20,87 Bn | | |
Tableau de données
| 1980 | 32 Bn | 1996 | 20,14 Bn | 2012 | 42,75 Bn |
| 1981 | 32,6 Bn | 1997 | 16,59 Bn | 2013 | 46,78 Bn |
| 1982 | 33,18 Bn | 1998 | 16,45 Bn | 2014 | 46,49 Bn |
| 1983 | 32,66 Bn | 1999 | 15,12 Bn | 2015 | 45,05 Bn |
| 1984 | 33,22 Bn | 2000 | 15,69 Bn | 2016 | 47,16 Bn |
| 1985 | 30,98 Bn | 2001 | 18,55 Bn | 2017 | 49,02 Bn |
| 1986 | 31,02 Bn | 2002 | 23,45 Bn | 2018 | 50,69 Bn |
| 1987 | 31,76 Bn | 2003 | 25,86 Bn | 2019 | 53,48 Bn |
| 1988 | 32,41 Bn | 2004 | 27,88 Bn | 2020 | 52,81 Bn |
| 1989 | 34,02 Bn | 2005 | 29,75 Bn | 2021 | 55,92 Bn |
| 1990 | 34,56 Bn | 2006 | 31,12 Bn | 2022 | 58,89 Bn |
| 1991 | 31,8 Bn | 2007 | 32,28 Bn | 2023 | 62,25 Bn |
| 1992 | 28,73 Bn | 2008 | 33,52 Bn | 2024 | 64,93 Bn |
| 1993 | 28,75 Bn | 2009 | 33,97 Bn | 2025 | 67,77 Bn |
| 1994 | 29,76 Bn | 2010 | 37,39 Bn | 2026 | 70,85 Bn |
| 1995 | 26,77 Bn | 2011 | 40,05 Bn | | |