Show data table
| 1980 | 304B | 1996 | 869B | 2012 | 8.68T |
| 1981 | 289B | 1997 | 968B | 2013 | 9.79T |
| 1982 | 285B | 1998 | 1.04T | 2014 | 10.7T |
| 1983 | 306B | 1999 | 1.1T | 2015 | 11.31T |
| 1984 | 315B | 2000 | 1.22T | 2016 | 11.45T |
| 1985 | 311B | 2001 | 1.35T | 2017 | 12.52T |
| 1986 | 301B | 2002 | 1.49T | 2018 | 14.11T |
| 1987 | 328B | 2003 | 1.68T | 2019 | 14.59T |
| 1988 | 409B | 2004 | 1.98T | 2020 | 15.11T |
| 1989 | 459B | 2005 | 2.33T | 2021 | 18.18T |
| 1990 | 397B | 2006 | 2.8T | 2022 | 18.34T |
| 1991 | 416B | 2007 | 3.61T | 2023 | 18.37T |
| 1992 | 496B | 2008 | 4.66T | 2024 | 18.95T |
| 1993 | 622B | 2009 | 5.18T | 2025 | 19.63T |
| 1994 | 566B | 2010 | 6.14T | 2026 | 20.85T |
| 1995 | 738B | 2011 | 7.63T | | |
Show data table
| 1980 | 455B | 1996 | 7.22T | 2012 | 54.81T |
| 1981 | 493B | 1997 | 8.02T | 2013 | 60.61T |
| 1982 | 540B | 1998 | 8.57T | 2014 | 65.74T |
| 1983 | 605B | 1999 | 9.12T | 2015 | 70.42T |
| 1984 | 730B | 2000 | 10.1T | 2016 | 76.07T |
| 1985 | 912B | 2001 | 11.19T | 2017 | 84.51T |
| 1986 | 1.04T | 2002 | 12.3T | 2018 | 93.36T |
| 1987 | 1.22T | 2003 | 13.91T | 2019 | 100.67T |
| 1988 | 1.52T | 2004 | 16.38T | 2020 | 104.22T |
| 1989 | 1.73T | 2005 | 19.06T | 2021 | 117.31T |
| 1990 | 1.9T | 2006 | 22.3T | 2022 | 123.34T |
| 1991 | 2.21T | 2007 | 27.48T | 2023 | 129.43T |
| 1992 | 2.73T | 2008 | 32.34T | 2024 | 134.92T |
| 1993 | 3.58T | 2009 | 35.36T | 2025 | 140.19T |
| 1994 | 4.88T | 2010 | 41.56T | 2026 | 145.88T |
| 1995 | 6.16T | 2011 | 49.27T | | |
Show data table
| 1980 | 2.65T | 1996 | 12.78T | 2012 | 56.8T |
| 1981 | 2.79T | 1997 | 13.97T | 2013 | 61.21T |
| 1982 | 3.04T | 1998 | 15.08T | 2014 | 65.8T |
| 1983 | 3.37T | 1999 | 16.24T | 2015 | 70.42T |
| 1984 | 3.88T | 2000 | 17.64T | 2016 | 75.19T |
| 1985 | 4.4T | 2001 | 19.1T | 2017 | 80.37T |
| 1986 | 4.8T | 2002 | 20.87T | 2018 | 85.8T |
| 1987 | 5.36T | 2003 | 22.98T | 2019 | 91T |
| 1988 | 5.96T | 2004 | 25.3T | 2020 | 93.13T |
| 1989 | 6.21T | 2005 | 28.19T | 2021 | 101.1T |
| 1990 | 6.45T | 2006 | 31.77T | 2022 | 104.24T |
| 1991 | 7.11T | 2007 | 36.26T | 2023 | 109.85T |
| 1992 | 8.12T | 2008 | 39.76T | 2024 | 115.34T |
| 1993 | 9.25T | 2009 | 43.51T | 2025 | 121.06T |
| 1994 | 10.47T | 2010 | 48.12T | 2026 | 126.41T |
| 1995 | 11.62T | 2011 | 52.67T | | |