Show data table
| 1980 | 15.3B | 1996 | 7.11B | 2012 | 79.1B |
| 1981 | 13.8B | 1997 | 7.87B | 2013 | 70.2B |
| 1982 | 4.87B | 1998 | 2.22B | 2014 | 54.4B |
| 1983 | 5.65B | 1999 | 5.06B | 2015 | 4.01B |
| 1984 | 7B | 2000 | 14.7B | 2016 | -5.06B |
| 1985 | 4.96B | 2001 | 8.32B | 2017 | 9.61B |
| 1986 | 5.67B | 2002 | 4.26B | 2018 | 19.9B |
| 1987 | 4.4B | 2003 | 9.42B | 2019 | 17.9B |
| 1988 | 5.09B | 2004 | 15.6B | 2020 | 4.84B |
| 1989 | 9.62B | 2005 | 30.1B | 2021 | 37.4B |
| 1990 | 3.72B | 2006 | 45.3B | 2022 | 63.1B |
| 1991 | -26.2B | 2007 | 41.3B | 2023 | 51.4B |
| 1992 | -451M | 2008 | 60.2B | 2024 | 46.7B |
| 1993 | 2.5B | 2009 | 28.3B | 2025 | 36.7B |
| 1994 | 3.22B | 2010 | 37B | 2026 | 45B |
| 1995 | 5.02B | 2011 | 66.1B | | |
Show data table
| 1981 | 54.6% | 1997 | 25.9% | 2013 | 40.3% |
| 1982 | 22.6% | 1998 | 8.5% | 2014 | 33.4% |
| 1983 | 27.1% | 1999 | 16.8% | 2015 | 3.5% |
| 1984 | 32.3% | 2000 | 38.9% | 2016 | -4.6% |
| 1985 | 23.1% | 2001 | 23.9% | 2017 | 8% |
| 1986 | 31.7% | 2002 | 11.2% | 2018 | 14.3% |
| 1987 | 19.6% | 2003 | 19.7% | 2019 | 12.7% |
| 1988 | 24.6% | 2004 | 26.2% | 2020 | 4.4% |
| 1989 | 39.6% | 2005 | 37.2% | 2021 | 25.2% |
| 1990 | 20.4% | 2006 | 44.6% | 2022 | 34.4% |
| 1991 | -243% | 2007 | 36% | 2023 | 31.1% |
| 1992 | -2.3% | 2008 | 40.9% | 2024 | 29% |
| 1993 | 10.4% | 2009 | 26.7% | 2025 | 23.3% |
| 1994 | 12.9% | 2010 | 32% | 2026 | 26% |
| 1995 | 18.4% | 2011 | 42.9% | | |
| 1996 | 22.6% | 2012 | 45.5% | | |