Show data table
| 1980 | 857B | 1996 | 2.51T | 2012 | 3.6T |
| 1981 | 721B | 1997 | 2.22T | 2013 | 3.81T |
| 1982 | 696B | 1998 | 2.25T | 2014 | 3.97T |
| 1983 | 694B | 1999 | 2.22T | 2015 | 3.43T |
| 1984 | 654B | 2000 | 1.97T | 2016 | 3.54T |
| 1985 | 663B | 2001 | 1.97T | 2017 | 3.76T |
| 1986 | 948B | 2002 | 2.1T | 2018 | 4.06T |
| 1987 | 1.18T | 2003 | 2.53T | 2019 | 3.96T |
| 1988 | 1.27T | 2004 | 2.85T | 2020 | 3.94T |
| 1989 | 1.26T | 2005 | 2.89T | 2021 | 4.36T |
| 1990 | 1.6T | 2006 | 3.05T | 2022 | 4.2T |
| 1991 | 1.88T | 2007 | 3.48T | 2023 | 4.56T |
| 1992 | 2.15T | 2008 | 3.81T | 2024 | 4.68T |
| 1993 | 2.08T | 2009 | 3.47T | 2025 | 5.05T |
| 1994 | 2.22T | 2010 | 3.47T | 2026 | 5.45T |
| 1995 | 2.6T | 2011 | 3.82T | | |
Show data table
| 1980 | 795B | 1996 | 1.93T | 2012 | 2.8T |
| 1981 | 830B | 1997 | 1.97T | 2013 | 2.87T |
| 1982 | 863B | 1998 | 2.02T | 2014 | 2.98T |
| 1983 | 905B | 1999 | 2.08T | 2015 | 3.09T |
| 1984 | 949B | 2000 | 2.13T | 2016 | 3.2T |
| 1985 | 991B | 2001 | 2.2T | 2017 | 3.33T |
| 1986 | 1.05T | 2002 | 2.22T | 2018 | 3.43T |
| 1987 | 1.08T | 2003 | 2.24T | 2019 | 3.54T |
| 1988 | 1.14T | 2004 | 2.29T | 2020 | 3.45T |
| 1989 | 1.21T | 2005 | 2.33T | 2021 | 3.68T |
| 1990 | 1.32T | 2006 | 2.43T | 2022 | 3.99T |
| 1991 | 1.59T | 2007 | 2.54T | 2023 | 4.22T |
| 1992 | 1.71T | 2008 | 2.59T | 2024 | 4.33T |
| 1993 | 1.76T | 2009 | 2.49T | 2025 | 4.47T |
| 1994 | 1.84T | 2010 | 2.62T | 2026 | 4.62T |
| 1995 | 1.9T | 2011 | 2.75T | | |
Show data table
| 1980 | 1.85T | 1996 | 2.59T | 2012 | 3.22T |
| 1981 | 1.85T | 1997 | 2.63T | 2013 | 3.23T |
| 1982 | 1.83T | 1998 | 2.69T | 2014 | 3.3T |
| 1983 | 1.86T | 1999 | 2.75T | 2015 | 3.35T |
| 1984 | 1.91T | 2000 | 2.83T | 2016 | 3.43T |
| 1985 | 1.96T | 2001 | 2.87T | 2017 | 3.52T |
| 1986 | 2T | 2002 | 2.87T | 2018 | 3.56T |
| 1987 | 2.03T | 2003 | 2.85T | 2019 | 3.6T |
| 1988 | 2.11T | 2004 | 2.88T | 2020 | 3.45T |
| 1989 | 2.19T | 2005 | 2.91T | 2021 | 3.59T |
| 1990 | 2.32T | 2006 | 3.02T | 2022 | 3.65T |
| 1991 | 2.43T | 2007 | 3.11T | 2023 | 3.62T |
| 1992 | 2.48T | 2008 | 3.14T | 2024 | 3.6T |
| 1993 | 2.46T | 2009 | 2.96T | 2025 | 3.61T |
| 1994 | 2.52T | 2010 | 3.09T | 2026 | 3.64T |
| 1995 | 2.56T | 2011 | 3.2T | | |