Show data table
| 1980 | 242B | 1996 | 432B | 2012 | 1.26T |
| 1981 | 311B | 1997 | 523B | 2013 | 1.33T |
| 1982 | 226B | 1998 | 557B | 2014 | 1.36T |
| 1983 | 184B | 1999 | 631B | 2015 | 1.21T |
| 1984 | 217B | 2000 | 742B | 2016 | 1.11T |
| 1985 | 230B | 2001 | 796B | 2017 | 1.19T |
| 1986 | 159B | 2002 | 811B | 2018 | 1.26T |
| 1987 | 175B | 2003 | 766B | 2019 | 1.3T |
| 1988 | 214B | 2004 | 819B | 2020 | 1.12T |
| 1989 | 261B | 2005 | 918B | 2021 | 1.32T |
| 1990 | 308B | 2006 | 1.02T | 2022 | 1.47T |
| 1991 | 369B | 2007 | 1.1T | 2023 | 1.79T |
| 1992 | 428B | 2008 | 1.16T | 2024 | 1.83T |
| 1993 | 530B | 2009 | 943B | 2025 | 1.83T |
| 1994 | 554B | 2010 | 1.11T | 2026 | 2.12T |
| 1995 | 380B | 2011 | 1.23T | | |
Show data table
| 1980 | 5.56B | 1996 | 3.28T | 2012 | 16.53T |
| 1981 | 7.62B | 1997 | 4.14T | 2013 | 16.95T |
| 1982 | 12.3B | 1998 | 5.09T | 2014 | 18.14T |
| 1983 | 22.1B | 1999 | 6.03T | 2015 | 19.23T |
| 1984 | 36.4B | 2000 | 7.02T | 2016 | 20.76T |
| 1985 | 59.1B | 2001 | 7.44T | 2017 | 22.54T |
| 1986 | 96.9B | 2002 | 7.83T | 2018 | 24.18T |
| 1987 | 239B | 2003 | 8.26T | 2019 | 25.12T |
| 1988 | 486B | 2004 | 9.25T | 2020 | 24.09T |
| 1989 | 642B | 2005 | 10T | 2021 | 26.69T |
| 1990 | 865B | 2006 | 11.12T | 2022 | 29.53T |
| 1991 | 1.11T | 2007 | 12.05T | 2023 | 31.87T |
| 1992 | 1.32T | 2008 | 12.93T | 2024 | 33.51T |
| 1993 | 1.65T | 2009 | 12.75T | 2025 | 35.26T |
| 1994 | 1.87T | 2010 | 13.97T | 2026 | 37.62T |
| 1995 | 2.44T | 2011 | 15.27T | | |
Show data table
| 1980 | 10.52T | 1996 | 14.5T | 2012 | 21.54T |
| 1981 | 11.52T | 1997 | 15.54T | 2013 | 21.72T |
| 1982 | 11.52T | 1998 | 16.5T | 2014 | 22.27T |
| 1983 | 10.99T | 1999 | 16.96T | 2015 | 22.87T |
| 1984 | 11.37T | 2000 | 17.81T | 2016 | 23.27T |
| 1985 | 11.59T | 2001 | 17.73T | 2017 | 23.71T |
| 1986 | 11.13T | 2002 | 17.69T | 2018 | 24.18T |
| 1987 | 11.36T | 2003 | 17.9T | 2019 | 24.08T |
| 1988 | 11.5T | 2004 | 18.54T | 2020 | 22.07T |
| 1989 | 11.92T | 2005 | 18.93T | 2021 | 23.4T |
| 1990 | 12.55T | 2006 | 19.84T | 2022 | 24.27T |
| 1991 | 13.04T | 2007 | 20.25T | 2023 | 25.03T |
| 1992 | 13.51T | 2008 | 20.44T | 2024 | 25.37T |
| 1993 | 13.9T | 2009 | 19.16T | 2025 | 25.51T |
| 1994 | 14.51T | 2010 | 20.11T | 2026 | 25.93T |
| 1995 | 13.65T | 2011 | 20.8T | | |