Tableau de données
| 1980 | 480 Md | 1996 | 1,32 Bn | 2012 | 2,1 Bn |
| 1981 | 435 Md | 1997 | 1,25 Bn | 2013 | 2,15 Bn |
| 1982 | 430 Md | 1998 | 1,27 Bn | 2014 | 2,17 Bn |
| 1983 | 446 Md | 1999 | 1,26 Bn | 2015 | 1,85 Bn |
| 1984 | 441 Md | 2000 | 1,15 Bn | 2016 | 1,89 Bn |
| 1985 | 455 Md | 2001 | 1,17 Bn | 2017 | 1,97 Bn |
| 1986 | 645 Md | 2002 | 1,28 Bn | 2018 | 2,1 Bn |
| 1987 | 810 Md | 2003 | 1,58 Bn | 2019 | 2,02 Bn |
| 1988 | 897 Md | 2004 | 1,81 Bn | 2020 | 1,91 Bn |
| 1989 | 933 Md | 2005 | 1,87 Bn | 2021 | 2,18 Bn |
| 1990 | 1,16 Bn | 2006 | 1,96 Bn | 2022 | 2,11 Bn |
| 1991 | 1,23 Bn | 2007 | 2,22 Bn | 2023 | 2,32 Bn |
| 1992 | 1,31 Bn | 2008 | 2,42 Bn | 2024 | 2,38 Bn |
| 1993 | 1,05 Bn | 2009 | 2,21 Bn | 2025 | 2,55 Bn |
| 1994 | 1,08 Bn | 2010 | 2,15 Bn | 2026 | 2,74 Bn |
| 1995 | 1,18 Bn | 2011 | 2,31 Bn | | |
Tableau de données
| 1980 | 212 Md | 1996 | 1,05 Bn | 2012 | 1,63 Bn |
| 1981 | 254 Md | 1997 | 1,1 Bn | 2013 | 1,62 Bn |
| 1982 | 300 Md | 1998 | 1,14 Bn | 2014 | 1,64 Bn |
| 1983 | 349 Md | 1999 | 1,18 Bn | 2015 | 1,66 Bn |
| 1984 | 399 Md | 2000 | 1,24 Bn | 2016 | 1,7 Bn |
| 1985 | 448 Md | 2001 | 1,31 Bn | 2017 | 1,74 Bn |
| 1986 | 495 Md | 2002 | 1,36 Bn | 2018 | 1,78 Bn |
| 1987 | 541 Md | 2003 | 1,4 Bn | 2019 | 1,8 Bn |
| 1988 | 602 Md | 2004 | 1,46 Bn | 2020 | 1,67 Bn |
| 1989 | 661 Md | 2005 | 1,5 Bn | 2021 | 1,84 Bn |
| 1990 | 719 Md | 2006 | 1,56 Bn | 2022 | 2 Bn |
| 1991 | 786 Md | 2007 | 1,62 Bn | 2023 | 2,14 Bn |
| 1992 | 827 Md | 2008 | 1,64 Bn | 2024 | 2,2 Bn |
| 1993 | 852 Md | 2009 | 1,58 Bn | 2025 | 2,26 Bn |
| 1994 | 901 Md | 2010 | 1,62 Bn | 2026 | 2,32 Bn |
| 1995 | 991 Md | 2011 | 1,66 Bn | | |
Tableau de données
| 1980 | 1,13 Bn | 1996 | 1,62 Bn | 2012 | 1,78 Bn |
| 1981 | 1,19 Bn | 1997 | 1,65 Bn | 2013 | 1,74 Bn |
| 1982 | 1,19 Bn | 1998 | 1,68 Bn | 2014 | 1,74 Bn |
| 1983 | 1,21 Bn | 1999 | 1,7 Bn | 2015 | 1,76 Bn |
| 1984 | 1,24 Bn | 2000 | 1,77 Bn | 2016 | 1,78 Bn |
| 1985 | 1,28 Bn | 2001 | 1,81 Bn | 2017 | 1,81 Bn |
| 1986 | 1,32 Bn | 2002 | 1,81 Bn | 2018 | 1,82 Bn |
| 1987 | 1,36 Bn | 2003 | 1,81 Bn | 2019 | 1,83 Bn |
| 1988 | 1,41 Bn | 2004 | 1,84 Bn | 2020 | 1,67 Bn |
| 1989 | 1,46 Bn | 2005 | 1,85 Bn | 2021 | 1,82 Bn |
| 1990 | 1,49 Bn | 2006 | 1,89 Bn | 2022 | 1,91 Bn |
| 1991 | 1,51 Bn | 2007 | 1,91 Bn | 2023 | 1,92 Bn |
| 1992 | 1,53 Bn | 2008 | 1,89 Bn | 2024 | 1,94 Bn |
| 1993 | 1,51 Bn | 2009 | 1,79 Bn | 2025 | 1,95 Bn |
| 1994 | 1,55 Bn | 2010 | 1,82 Bn | 2026 | 1,96 Bn |
| 1995 | 1,59 Bn | 2011 | 1,83 Bn | | |