Tabel data
| 1978 | 343 juta | 1994 | 595 juta | 2010 | 3,5 miliar |
| 1979 | 505 juta | 1995 | 234 juta | 2011 | 3,64 miliar |
| 1980 | 497 juta | 1996 | 160 juta | 2012 | 4,14 miliar |
| 1981 | 619 juta | 1997 | 457 juta | 2013 | 6,09 miliar |
| 1982 | 668 juta | 1998 | 170 juta | 2014 | 6,85 miliar |
| 1983 | 779 juta | 1999 | 1,07 miliar | 2015 | 3,61 miliar |
| 1984 | 1,07 miliar | 2000 | 584 juta | 2016 | 2,76 miliar |
| 1985 | 1,15 miliar | 2001 | 404 juta | 2017 | 3,06 miliar |
| 1986 | 1,16 miliar | 2002 | 439 juta | 2018 | 1,98 miliar |
| 1987 | 1,49 miliar | 2003 | 670 juta | 2019 | 1,47 miliar |
| 1988 | 1,47 miliar | 2004 | 818 juta | 2020 | 992 juta |
| 1989 | 1,95 miliar | 2005 | 1,37 miliar | 2021 | 974 juta |
| 1990 | 1,75 miliar | 2006 | 1,97 miliar | 2022 | 1,62 miliar |
| 1991 | 1,03 miliar | 2007 | 2,03 miliar | 2023 | 1,25 miliar |
| 1992 | 794 juta | 2008 | 3,16 miliar | 2024 | 924 juta |
| 1993 | 1,77 miliar | 2009 | 3,31 miliar | 2025 | 1,46 miliar |
Tabel data
| 1985 | 0% | 1999 | 17,3% | 2013 | 4,5% |
| 1986 | 0% | 2000 | 6,4% | 2014 | 4,7% |
| 1987 | 22,3% | 2001 | 4,5% | 2015 | 3,1% |
| 1988 | 22% | 2002 | 2,9% | 2016 | 2,7% |
| 1989 | 19,4% | 2003 | 3,8% | 2017 | 2,5% |
| 1990 | 17,5% | 2004 | 3,5% | 2018 | 2% |
| 1991 | 7,1% | 2005 | 3,7% | 2019 | 1,8% |
| 1992 | 5,7% | 2006 | 3,8% | 2020 | 1,8% |
| 1993 | 17,5% | 2007 | 3,1% | 2021 | 1,4% |
| 1994 | 5,7% | 2008 | 3,6% | 2022 | 1,4% |
| 1995 | 4,7% | 2009 | 4,7% | 2023 | 1,4% |
| 1996 | 2,4% | 2010 | 4,2% | 2024 | 1% |
| 1997 | 6% | 2011 | 3,3% | 2025 | 1,4% |
| 1998 | 2,6% | 2012 | 3,2% | | |