Show data table
| 1980 | 16.1B | 1996 | 23B | 2012 | 87.7B |
| 1981 | 16.5B | 1997 | 25.8B | 2013 | 96.6B |
| 1982 | 16.5B | 1998 | 26.3B | 2014 | 103B |
| 1983 | 14.5B | 1999 | 18.9B | 2015 | 97.2B |
| 1984 | 15.4B | 2000 | 17.5B | 2016 | 97.7B |
| 1985 | 18B | 2001 | 23.1B | 2017 | 104B |
| 1986 | 13.2B | 2002 | 27.1B | 2018 | 107B |
| 1987 | 12.4B | 2003 | 31B | 2019 | 108B |
| 1988 | 11.7B | 2004 | 35.2B | 2020 | 95.9B |
| 1989 | 11.5B | 2005 | 40.3B | 2021 | 107B |
| 1990 | 11.7B | 2006 | 45.7B | 2022 | 116B |
| 1991 | 13.1B | 2007 | 49.8B | 2023 | 121B |
| 1992 | 14.4B | 2008 | 61.1B | 2024 | 124B |
| 1993 | 16.8B | 2009 | 60.1B | 2025 | 130B |
| 1994 | 20.2B | 2010 | 68.2B | 2026 | 138B |
| 1995 | 22B | 2011 | 79B | | |
Show data table
| 1980 | 16.1B | 1996 | 23B | 2012 | 87.7B |
| 1981 | 16.5B | 1997 | 25.8B | 2013 | 96.6B |
| 1982 | 16.5B | 1998 | 26.3B | 2014 | 103B |
| 1983 | 14.5B | 1999 | 18.9B | 2015 | 97.2B |
| 1984 | 15.4B | 2000 | 17.5B | 2016 | 97.7B |
| 1985 | 18B | 2001 | 23.1B | 2017 | 104B |
| 1986 | 13.2B | 2002 | 27.1B | 2018 | 107B |
| 1987 | 12.4B | 2003 | 31B | 2019 | 108B |
| 1988 | 11.7B | 2004 | 35.2B | 2020 | 95.9B |
| 1989 | 11.5B | 2005 | 40.3B | 2021 | 107B |
| 1990 | 11.7B | 2006 | 45.7B | 2022 | 116B |
| 1991 | 13.1B | 2007 | 49.8B | 2023 | 121B |
| 1992 | 14.4B | 2008 | 61.1B | 2024 | 124B |
| 1993 | 16.8B | 2009 | 60.1B | 2025 | 130B |
| 1994 | 20.2B | 2010 | 68.2B | 2026 | 138B |
| 1995 | 22B | 2011 | 79B | | |
Show data table
| 1980 | 33.9B | 1996 | 50.3B | 2012 | 90.3B |
| 1981 | 35.2B | 1997 | 52.4B | 2013 | 96.9B |
| 1982 | 35.7B | 1998 | 54.2B | 2014 | 101B |
| 1983 | 34.7B | 1999 | 51.6B | 2015 | 101B |
| 1984 | 36.1B | 2000 | 52.2B | 2016 | 100B |
| 1985 | 37.7B | 2001 | 54.4B | 2017 | 106B |
| 1986 | 38.9B | 2002 | 57B | 2018 | 107B |
| 1987 | 36.6B | 2003 | 58.7B | 2019 | 108B |
| 1988 | 40.4B | 2004 | 62.7B | 2020 | 97.7B |
| 1989 | 40.5B | 2005 | 66.1B | 2021 | 107B |
| 1990 | 41.7B | 2006 | 68.9B | 2022 | 113B |
| 1991 | 43.9B | 2007 | 70.2B | 2023 | 115B |
| 1992 | 45.4B | 2008 | 74.9B | 2024 | 113B |
| 1993 | 46.4B | 2009 | 75.7B | 2025 | 117B |
| 1994 | 48.3B | 2010 | 78.7B | 2026 | 120B |
| 1995 | 49.4B | 2011 | 85.4B | | |