Show data table
| 1980 | 605B | 1996 | 1.43T | 2012 | 2.72T |
| 1981 | 589B | 1997 | 1.57T | 2013 | 2.8T |
| 1982 | 560B | 1998 | 1.66T | 2014 | 3.09T |
| 1983 | 534B | 1999 | 1.69T | 2015 | 2.95T |
| 1984 | 506B | 2000 | 1.67T | 2016 | 2.72T |
| 1985 | 538B | 2001 | 1.66T | 2017 | 2.7T |
| 1986 | 656B | 2002 | 1.79T | 2018 | 2.9T |
| 1987 | 816B | 2003 | 2.06T | 2019 | 2.88T |
| 1988 | 993B | 2004 | 2.43T | 2020 | 2.73T |
| 1989 | 1.01T | 2005 | 2.55T | 2021 | 3.2T |
| 1990 | 1.2T | 2006 | 2.72T | 2022 | 3.19T |
| 1991 | 1.25T | 2007 | 3.11T | 2023 | 3.42T |
| 1992 | 1.29T | 2008 | 2.98T | 2024 | 3.7T |
| 1993 | 1.16T | 2009 | 2.44T | 2025 | 4T |
| 1994 | 1.25T | 2010 | 2.5T | 2026 | 4.26T |
| 1995 | 1.35T | 2011 | 2.68T | | |
Show data table
| 1980 | 260B | 1996 | 914B | 2012 | 1.72T |
| 1981 | 291B | 1997 | 959B | 2013 | 1.79T |
| 1982 | 320B | 1998 | 1T | 2014 | 1.88T |
| 1983 | 352B | 1999 | 1.05T | 2015 | 1.93T |
| 1984 | 379B | 2000 | 1.1T | 2016 | 2T |
| 1985 | 415B | 2001 | 1.15T | 2017 | 2.1T |
| 1986 | 448B | 2002 | 1.19T | 2018 | 2.17T |
| 1987 | 498B | 2003 | 1.26T | 2019 | 2.25T |
| 1988 | 557B | 2004 | 1.33T | 2020 | 2.12T |
| 1989 | 617B | 2005 | 1.4T | 2021 | 2.32T |
| 1990 | 673B | 2006 | 1.48T | 2022 | 2.58T |
| 1991 | 708B | 2007 | 1.55T | 2023 | 2.75T |
| 1992 | 733B | 2008 | 1.6T | 2024 | 2.89T |
| 1993 | 772B | 2009 | 1.56T | 2025 | 3.04T |
| 1994 | 814B | 2010 | 1.62T | 2026 | 3.14T |
| 1995 | 855B | 2011 | 1.67T | | |
Show data table
| 1980 | 1.14T | 1996 | 1.67T | 2012 | 2.3T |
| 1981 | 1.13T | 1997 | 1.75T | 2013 | 2.34T |
| 1982 | 1.16T | 1998 | 1.8T | 2014 | 2.42T |
| 1983 | 1.21T | 1999 | 1.86T | 2015 | 2.47T |
| 1984 | 1.23T | 2000 | 1.94T | 2016 | 2.52T |
| 1985 | 1.28T | 2001 | 1.99T | 2017 | 2.6T |
| 1986 | 1.32T | 2002 | 2.02T | 2018 | 2.64T |
| 1987 | 1.4T | 2003 | 2.09T | 2019 | 2.67T |
| 1988 | 1.47T | 2004 | 2.13T | 2020 | 2.4T |
| 1989 | 1.51T | 2005 | 2.19T | 2021 | 2.61T |
| 1990 | 1.52T | 2006 | 2.24T | 2022 | 2.74T |
| 1991 | 1.49T | 2007 | 2.31T | 2023 | 2.75T |
| 1992 | 1.5T | 2008 | 2.31T | 2024 | 2.78T |
| 1993 | 1.53T | 2009 | 2.2T | 2025 | 2.82T |
| 1994 | 1.58T | 2010 | 2.25T | 2026 | 2.84T |
| 1995 | 1.62T | 2011 | 2.27T | | |