Tableau de données
| 1980 | 1,95 Md | 1996 | 3,2 Md | 2012 | 12,3 Md |
| 1981 | 2,23 Md | 1997 | 2,23 Md | 2013 | 12,8 Md |
| 1982 | 2,3 Md | 1998 | 2,56 Md | 2014 | 13,2 Md |
| 1983 | 2,32 Md | 1999 | 3,23 Md | 2015 | 11,4 Md |
| 1984 | 2,29 Md | 2000 | 3,49 Md | 2016 | 11,9 Md |
| 1985 | 2,34 Md | 2001 | 3,93 Md | 2017 | 13,1 Md |
| 1986 | 2,59 Md | 2002 | 4,36 Md | 2018 | 15,4 Md |
| 1987 | 2,57 Md | 2003 | 5,56 Md | 2019 | 15,6 Md |
| 1988 | 2,53 Md | 2004 | 7,18 Md | 2020 | 15,3 Md |
| 1989 | 2,78 Md | 2005 | 8,05 Md | 2021 | 18 Md |
| 1990 | 2,22 Md | 2006 | 8,9 Md | 2022 | 19,2 Md |
| 1991 | 1,33 Md | 2007 | 10,7 Md | 2023 | 23,6 Md |
| 1992 | 843 M | 2008 | 12,9 Md | 2024 | 27,1 Md |
| 1993 | 1,46 Md | 2009 | 12 Md | 2025 | 30,3 Md |
| 1994 | 2,36 Md | 2010 | 11,9 Md | 2026 | 33,3 Md |
| 1995 | 2,88 Md | 2011 | 12,9 Md | | |
Tableau de données
| 1980 | 18,5 Md | 1996 | 334 Md | 2012 | 1,33 Bn |
| 1981 | 19,1 Md | 1997 | 331 Md | 2013 | 1,35 Bn |
| 1982 | 19,7 Md | 1998 | 385 Md | 2014 | 1,4 Bn |
| 1983 | 19,9 Md | 1999 | 444 Md | 2015 | 1,43 Bn |
| 1984 | 19,6 Md | 2000 | 501 Md | 2016 | 1,47 Bn |
| 1985 | 20,1 Md | 2001 | 563 Md | 2017 | 1,55 Bn |
| 1986 | 20,7 Md | 2002 | 610 Md | 2018 | 1,66 Bn |
| 1987 | 20,5 Md | 2003 | 678 Md | 2019 | 1,71 Bn |
| 1988 | 20,2 Md | 2004 | 738 Md | 2020 | 1,66 Bn |
| 1989 | 22,2 Md | 2005 | 804 Md | 2021 | 1,87 Bn |
| 1990 | 20 Md | 2006 | 873 Md | 2022 | 2,15 Bn |
| 1991 | 19,5 Md | 2007 | 966 Md | 2023 | 2,36 Bn |
| 1992 | 63,3 Md | 2008 | 1,08 Bn | 2024 | 2,52 Bn |
| 1993 | 149 Md | 2009 | 1,14 Bn | 2025 | 2,66 Bn |
| 1994 | 224 Md | 2010 | 1,24 Bn | 2026 | 2,83 Bn |
| 1995 | 267 Md | 2011 | 1,3 Bn | | |
Tableau de données
| 1980 | 639 Md | 1996 | 685 Md | 2012 | 1,44 Bn |
| 1981 | 675 Md | 1997 | 611 Md | 2013 | 1,45 Bn |
| 1982 | 695 Md | 1998 | 664 Md | 2014 | 1,48 Bn |
| 1983 | 702 Md | 1999 | 750 Md | 2015 | 1,51 Bn |
| 1984 | 716 Md | 2000 | 802 Md | 2016 | 1,57 Bn |
| 1985 | 706 Md | 2001 | 869 Md | 2017 | 1,62 Bn |
| 1986 | 745 Md | 2002 | 908 Md | 2018 | 1,68 Bn |
| 1987 | 739 Md | 2003 | 958 Md | 2019 | 1,71 Bn |
| 1988 | 729 Md | 2004 | 1,01 Bn | 2020 | 1,66 Bn |
| 1989 | 800 Md | 2005 | 1,07 Bn | 2021 | 1,8 Bn |
| 1990 | 720 Md | 2006 | 1,13 Bn | 2022 | 1,89 Bn |
| 1991 | 519 Md | 2007 | 1,2 Bn | 2023 | 1,97 Bn |
| 1992 | 481 Md | 2008 | 1,29 Bn | 2024 | 2,05 Bn |
| 1993 | 527 Md | 2009 | 1,33 Bn | 2025 | 2,12 Bn |
| 1994 | 577 Md | 2010 | 1,38 Bn | 2026 | 2,2 Bn |
| 1995 | 628 Md | 2011 | 1,42 Bn | | |