Tableau de données
| 1980 | 1,47 Md | 1996 | 1,57 Md | 2012 | 7,56 Md |
| 1981 | 1,67 Md | 1997 | 2,11 Md | 2013 | 7,71 Md |
| 1982 | 1,78 Md | 1998 | 2,26 Md | 2014 | 8,13 Md |
| 1983 | 1,9 Md | 1999 | 2,1 Md | 2015 | 8,45 Md |
| 1984 | 1,83 Md | 2000 | 2,02 Md | 2016 | 8,6 Md |
| 1985 | 2,17 Md | 2001 | 1,94 Md | 2017 | 9,17 Md |
| 1986 | 2,46 Md | 2002 | 1,94 Md | 2018 | 9,65 Md |
| 1987 | 2,73 Md | 2003 | 2,11 Md | 2019 | 10,5 Md |
| 1988 | 2,92 Md | 2004 | 2,35 Md | 2020 | 10,5 Md |
| 1989 | 3,05 Md | 2005 | 2,9 Md | 2021 | 11,3 Md |
| 1990 | 2,91 Md | 2006 | 3,27 Md | 2022 | 13,7 Md |
| 1991 | 2,15 Md | 2007 | 4,02 Md | 2023 | 14,8 Md |
| 1992 | 2,28 Md | 2008 | 5,12 Md | 2024 | 15,1 Md |
| 1993 | 2,2 Md | 2009 | 5,61 Md | 2025 | 16 Md |
| 1994 | 1,4 Md | 2010 | 6,05 Md | 2026 | 17,3 Md |
| 1995 | 1,45 Md | 2011 | 6,8 Md | | |
Tableau de données
| 1980 | 137 Md | 1996 | 481 Md | 2012 | 4,64 Bn |
| 1981 | 155 Md | 1997 | 639 Md | 2013 | 4,99 Bn |
| 1982 | 166 Md | 1998 | 708 Md | 2014 | 5,55 Bn |
| 1983 | 180 Md | 1999 | 710 Md | 2015 | 6,08 Bn |
| 1984 | 201 Md | 2000 | 795 Md | 2016 | 6,77 Bn |
| 1985 | 219 Md | 2001 | 859 Md | 2017 | 7,62 Bn |
| 1986 | 215 Md | 2002 | 922 Md | 2018 | 8,31 Bn |
| 1987 | 217 Md | 2003 | 1,13 Bn | 2019 | 9,46 Bn |
| 1988 | 223 Md | 2004 | 1,35 Bn | 2020 | 9,89 Bn |
| 1989 | 244 Md | 2005 | 1,61 Bn | 2021 | 11,13 Bn |
| 1990 | 241 Md | 2006 | 1,81 Bn | 2022 | 14,16 Bn |
| 1991 | 269 Md | 2007 | 2,2 Bn | 2023 | 17,18 Bn |
| 1992 | 305 Md | 2008 | 2,8 Bn | 2024 | 19,92 Bn |
| 1993 | 317 Md | 2009 | 3,19 Bn | 2025 | 22,82 Bn |
| 1994 | 197 Md | 2010 | 3,53 Bn | 2026 | 26,01 Bn |
| 1995 | 380 Md | 2011 | 4,08 Bn | | |
Tableau de données
| 1980 | 2,84 Bn | 1996 | 2,61 Bn | 2012 | 9,39 Bn |
| 1981 | 2,91 Bn | 1997 | 3 Bn | 2013 | 9,84 Bn |
| 1982 | 2,83 Bn | 1998 | 3,25 Bn | 2014 | 10,4 Bn |
| 1983 | 3 Bn | 1999 | 3,36 Bn | 2015 | 11,32 Bn |
| 1984 | 3,39 Bn | 2000 | 3,64 Bn | 2016 | 11,96 Bn |
| 1985 | 3,54 Bn | 2001 | 3,95 Bn | 2017 | 12,52 Bn |
| 1986 | 3,74 Bn | 2002 | 4,47 Bn | 2018 | 13,53 Bn |
| 1987 | 3,73 Bn | 2003 | 4,57 Bn | 2019 | 14,79 Bn |
| 1988 | 3,74 Bn | 2004 | 4,91 Bn | 2020 | 14,38 Bn |
| 1989 | 3,53 Bn | 2005 | 5,37 Bn | 2021 | 15,59 Bn |
| 1990 | 3,54 Bn | 2006 | 5,87 Bn | 2022 | 17,12 Bn |
| 1991 | 3,39 Bn | 2007 | 6,32 Bn | 2023 | 18,58 Bn |
| 1992 | 3,61 Bn | 2008 | 7,02 Bn | 2024 | 19,92 Bn |
| 1993 | 3,24 Bn | 2009 | 7,46 Bn | 2025 | 21,31 Bn |
| 1994 | 1,88 Bn | 2010 | 8,01 Bn | 2026 | 22,85 Bn |
| 1995 | 2,34 Bn | 2011 | 8,65 Bn | | |