Show data table
| 1980 | 695B | 1996 | 1.6T | 2012 | 2.68T |
| 1981 | 613B | 1997 | 1.45T | 2013 | 2.82T |
| 1982 | 581B | 1998 | 1.5T | 2014 | 2.86T |
| 1983 | 556B | 1999 | 1.49T | 2015 | 2.44T |
| 1984 | 527B | 2000 | 1.36T | 2016 | 2.47T |
| 1985 | 552B | 2001 | 1.37T | 2017 | 2.59T |
| 1986 | 766B | 2002 | 1.49T | 2018 | 2.78T |
| 1987 | 927B | 2003 | 1.83T | 2019 | 2.72T |
| 1988 | 1.01T | 2004 | 2.11T | 2020 | 2.65T |
| 1989 | 1.02T | 2005 | 2.19T | 2021 | 2.97T |
| 1990 | 1.26T | 2006 | 2.32T | 2022 | 2.8T |
| 1991 | 1.26T | 2007 | 2.66T | 2023 | 3.06T |
| 1992 | 1.39T | 2008 | 2.93T | 2024 | 3.16T |
| 1993 | 1.32T | 2009 | 2.7T | 2025 | 3.37T |
| 1994 | 1.39T | 2010 | 2.65T | 2026 | 3.6T |
| 1995 | 1.6T | 2011 | 2.87T | | |
Show data table
| 1980 | 447B | 1996 | 1.25T | 2012 | 2.09T |
| 1981 | 505B | 1997 | 1.29T | 2013 | 2.12T |
| 1982 | 579B | 1998 | 1.35T | 2014 | 2.15T |
| 1983 | 643B | 1999 | 1.4T | 2015 | 2.2T |
| 1984 | 700B | 2000 | 1.47T | 2016 | 2.23T |
| 1985 | 750B | 2001 | 1.53T | 2017 | 2.29T |
| 1986 | 808B | 2002 | 1.58T | 2018 | 2.36T |
| 1987 | 849B | 2003 | 1.62T | 2019 | 2.43T |
| 1988 | 918B | 2004 | 1.7T | 2020 | 2.32T |
| 1989 | 989B | 2005 | 1.76T | 2021 | 2.51T |
| 1990 | 1.04T | 2006 | 1.85T | 2022 | 2.65T |
| 1991 | 1.08T | 2007 | 1.94T | 2023 | 2.83T |
| 1992 | 1.12T | 2008 | 1.99T | 2024 | 2.92T |
| 1993 | 1.13T | 2009 | 1.94T | 2025 | 2.98T |
| 1994 | 1.17T | 2010 | 2T | 2026 | 3.05T |
| 1995 | 1.21T | 2011 | 2.06T | | |
Show data table
| 1980 | 1.22T | 1996 | 1.7T | 2012 | 2.28T |
| 1981 | 1.24T | 1997 | 1.75T | 2013 | 2.3T |
| 1982 | 1.27T | 1998 | 1.81T | 2014 | 2.32T |
| 1983 | 1.28T | 1999 | 1.87T | 2015 | 2.35T |
| 1984 | 1.31T | 2000 | 1.95T | 2016 | 2.36T |
| 1985 | 1.33T | 2001 | 1.98T | 2017 | 2.42T |
| 1986 | 1.36T | 2002 | 2.01T | 2018 | 2.46T |
| 1987 | 1.39T | 2003 | 2.03T | 2019 | 2.51T |
| 1988 | 1.46T | 2004 | 2.08T | 2020 | 2.32T |
| 1989 | 1.52T | 2005 | 2.12T | 2021 | 2.47T |
| 1990 | 1.57T | 2006 | 2.18T | 2022 | 2.54T |
| 1991 | 1.59T | 2007 | 2.23T | 2023 | 2.59T |
| 1992 | 1.61T | 2008 | 2.24T | 2024 | 2.61T |
| 1993 | 1.6T | 2009 | 2.18T | 2025 | 2.64T |
| 1994 | 1.64T | 2010 | 2.22T | 2026 | 2.66T |
| 1995 | 1.68T | 2011 | 2.27T | | |