Tableau de données
| 1980 | 1,91 Md | 1996 | 3,73 Md | 2012 | 10,2 Md |
| 1981 | 1,12 Md | 1997 | 3,52 Md | 2013 | 12 Md |
| 1982 | 1,12 Md | 1998 | 1,33 Md | 2014 | 13,3 Md |
| 1983 | 2,05 Md | 1999 | 1,42 Md | 2015 | 14,4 Md |
| 1984 | 2,93 Md | 2000 | 1,72 Md | 2016 | 15,9 Md |
| 1985 | 3,69 Md | 2001 | 1,76 Md | 2017 | 17,1 Md |
| 1986 | 2,58 Md | 2002 | 1,84 Md | 2018 | 18,1 Md |
| 1987 | 1,82 Md | 2003 | 2,26 Md | 2019 | 18,8 Md |
| 1988 | 1,18 Md | 2004 | 2,65 Md | 2020 | 18,5 Md |
| 1989 | 1,46 Md | 2005 | 3,08 Md | 2021 | 18,5 Md |
| 1990 | 1,74 Md | 2006 | 3,93 Md | 2022 | 15,1 Md |
| 1991 | 2,05 Md | 2007 | 4,76 Md | 2023 | 15 Md |
| 1992 | 2,35 Md | 2008 | 5,95 Md | 2024 | 15,8 Md |
| 1993 | 2,65 Md | 2009 | 6,43 Md | 2025 | 17,8 Md |
| 1994 | 3,08 Md | 2010 | 7,51 Md | 2026 | 19 Md |
| 1995 | 3,58 Md | 2011 | 8,96 Md | | |
Tableau de données
| 1980 | 19,8 Md | 1996 | 3,45 Bn | 2012 | 81,61 Bn |
| 1981 | 22,6 Md | 1997 | 4,4 Bn | 2013 | 93,87 Bn |
| 1982 | 39,7 Md | 1998 | 4,4 Bn | 2014 | 106,8 Bn |
| 1983 | 72,5 Md | 1999 | 9,92 Bn | 2015 | 117,25 Bn |
| 1984 | 104 Md | 2000 | 14,13 Bn | 2016 | 129,28 Bn |
| 1985 | 168 Md | 2001 | 16,67 Bn | 2017 | 140,7 Bn |
| 1986 | 248 Md | 2002 | 19,69 Bn | 2018 | 152,41 Bn |
| 1987 | 322 Md | 2003 | 23,65 Bn | 2019 | 163,08 Bn |
| 1988 | 469 Md | 2004 | 28,06 Bn | 2020 | 167,67 Bn |
| 1989 | 853 Md | 2005 | 32,48 Bn | 2021 | 180,75 Bn |
| 1990 | 1,22 Bn | 2006 | 39,7 Bn | 2022 | 217,35 Bn |
| 1991 | 1,44 Bn | 2007 | 45,65 Bn | 2023 | 280,52 Bn |
| 1992 | 1,69 Bn | 2008 | 51,95 Bn | 2024 | 340,47 Bn |
| 1993 | 1,9 Bn | 2009 | 54,79 Bn | 2025 | 385,22 Bn |
| 1994 | 2,22 Bn | 2010 | 62 Bn | 2026 | 437,81 Bn |
| 1995 | 2,84 Bn | 2011 | 71,96 Bn | | |
Tableau de données
| 1980 | 11,31 Bn | 1996 | 28,38 Bn | 2012 | 81,61 Bn |
| 1981 | 13,04 Bn | 1997 | 30,34 Bn | 2013 | 88,16 Bn |
| 1982 | 13,65 Bn | 1998 | 31,64 Bn | 2014 | 94,87 Bn |
| 1983 | 14,06 Bn | 1999 | 32,91 Bn | 2015 | 101,77 Bn |
| 1984 | 14,97 Bn | 2000 | 35,03 Bn | 2016 | 108,91 Bn |
| 1985 | 16,33 Bn | 2001 | 36,7 Bn | 2017 | 116,42 Bn |
| 1986 | 17,12 Bn | 2002 | 39,2 Bn | 2018 | 123,7 Bn |
| 1987 | 16,96 Bn | 2003 | 41,62 Bn | 2019 | 129,45 Bn |
| 1988 | 16,6 Bn | 2004 | 44,61 Bn | 2020 | 128,89 Bn |
| 1989 | 18,24 Bn | 2005 | 47,71 Bn | 2021 | 131,54 Bn |
| 1990 | 19,46 Bn | 2006 | 51,98 Bn | 2022 | 134,51 Bn |
| 1991 | 20,24 Bn | 2007 | 56,06 Bn | 2023 | 139,43 Bn |
| 1992 | 21,66 Bn | 2008 | 60,44 Bn | 2024 | 145,42 Bn |
| 1993 | 22,93 Bn | 2009 | 64,9 Bn | 2025 | 152,36 Bn |
| 1994 | 24,8 Bn | 2010 | 70,1 Bn | 2026 | 158,47 Bn |
| 1995 | 26,55 Bn | 2011 | 75,7 Bn | | |