Show data table
| 1980 | 40.2B | 1996 | 36.8B | 2012 | 92.5B |
| 1981 | 34.7B | 1997 | 37.7B | 2013 | 75.4B |
| 1982 | 34.6B | 1998 | 30.9B | 2014 | 57.4B |
| 1983 | 33B | 1999 | 37.1B | 2015 | 48.7B |
| 1984 | 30.9B | 2000 | 39.5B | 2016 | 49.9B |
| 1985 | 30.4B | 2001 | 35.2B | 2017 | 67.2B |
| 1986 | 24.8B | 2002 | 21.1B | 2018 | 76.7B |
| 1987 | 23B | 2003 | 27B | 2019 | 69.2B |
| 1988 | 25.9B | 2004 | 34.1B | 2020 | 46.9B |
| 1989 | 27.4B | 2005 | 48.9B | 2021 | 35.2B |
| 1990 | 31.6B | 2006 | 60.1B | 2022 | 43.3B |
| 1991 | 35B | 2007 | 68.2B | 2023 | 44B |
| 1992 | 35.5B | 2008 | 86.8B | 2024 | 49.3B |
| 1993 | 31.9B | 2009 | 60.8B | 2025 | 44.7B |
| 1994 | 29.7B | 2010 | 75.4B | 2026 | 52.5B |
| 1995 | 33.7B | 2011 | 48.2B | | |
Show data table
| 1980 | 11.9B | 1996 | 13.3B | 2012 | 117B |
| 1981 | 10.3B | 1997 | 14.4B | 2013 | 95.8B |
| 1982 | 10.2B | 1998 | 14.5B | 2014 | 73B |
| 1983 | 9.77B | 1999 | 17.2B | 2015 | 67.3B |
| 1984 | 9.15B | 2000 | 20.2B | 2016 | 69.4B |
| 1985 | 9B | 2001 | 21.3B | 2017 | 93.6B |
| 1986 | 7.8B | 2002 | 26.8B | 2018 | 105B |
| 1987 | 6.83B | 2003 | 34.7B | 2019 | 96.8B |
| 1988 | 7.4B | 2004 | 44.4B | 2020 | 65.1B |
| 1989 | 8.22B | 2005 | 63.9B | 2021 | 159B |
| 1990 | 8.95B | 2006 | 78.9B | 2022 | 208B |
| 1991 | 9.82B | 2007 | 85.9B | 2023 | 212B |
| 1992 | 10.4B | 2008 | 106B | 2024 | 239B |
| 1993 | 10.2B | 2009 | 76.2B | 2025 | 236B |
| 1994 | 10.9B | 2010 | 95.5B | 2026 | 333B |
| 1995 | 11.7B | 2011 | 59B | | |
Show data table
| 1980 | 143B | 1996 | 87.4B | 2012 | 117B |
| 1981 | 114B | 1997 | 85.1B | 2013 | 95.8B |
| 1982 | 116B | 1998 | 84.5B | 2014 | 73.7B |
| 1983 | 110B | 1999 | 84.4B | 2015 | 73.1B |
| 1984 | 101B | 2000 | 87.8B | 2016 | 72B |
| 1985 | 102B | 2001 | 90.1B | 2017 | 95.4B |
| 1986 | 90.3B | 2002 | 86.7B | 2018 | 103B |
| 1987 | 77.1B | 2003 | 101B | 2019 | 91.5B |
| 1988 | 82.9B | 2004 | 107B | 2020 | 64.5B |
| 1989 | 88.9B | 2005 | 118B | 2021 | 82.2B |
| 1990 | 92.2B | 2006 | 118B | 2022 | 75.1B |
| 1991 | 109B | 2007 | 126B | 2023 | 82.9B |
| 1992 | 104B | 2008 | 125B | 2024 | 86.4B |
| 1993 | 98.4B | 2009 | 120B | 2025 | 100B |
| 1994 | 102B | 2010 | 126B | 2026 | 107B |
| 1995 | 85.9B | 2011 | 62.5B | | |