Show data table
| 1980 | 2.3B | 1996 | 3.25B | 2012 | 11.1B |
| 1981 | 1.56B | 1997 | 3.12B | 2013 | 12.5B |
| 1982 | 1.54B | 1998 | 3.36B | 2014 | 13.3B |
| 1983 | 1.36B | 1999 | 3.68B | 2015 | 11.4B |
| 1984 | 1.46B | 2000 | 3.52B | 2016 | 11.8B |
| 1985 | 1.58B | 2001 | 3.67B | 2017 | 12.8B |
| 1986 | 2.04B | 2002 | 4.19B | 2018 | 14.3B |
| 1987 | 2.43B | 2003 | 5.35B | 2019 | 14.7B |
| 1988 | 2.55B | 2004 | 6.19B | 2020 | 15.7B |
| 1989 | 2.37B | 2005 | 6.57B | 2021 | 17.7B |
| 1990 | 2.89B | 2006 | 7.03B | 2022 | 17.4B |
| 1991 | 2.95B | 2007 | 8.17B | 2023 | 19.7B |
| 1992 | 3.28B | 2008 | 9.79B | 2024 | 21.5B |
| 1993 | 3.2B | 2009 | 9.73B | 2025 | 24.4B |
| 1994 | 2.23B | 2010 | 9.54B | 2026 | 27.8B |
| 1995 | 2.99B | 2011 | 10.7B | | |
Show data table
| 1980 | 518B | 1996 | 1.65T | 2012 | 5.69T |
| 1981 | 448B | 1997 | 1.81T | 2013 | 6.18T |
| 1982 | 518B | 1998 | 1.98T | 2014 | 6.56T |
| 1983 | 569B | 1999 | 2.26T | 2015 | 6.73T |
| 1984 | 636B | 2000 | 2.5T | 2016 | 7.01T |
| 1985 | 682B | 2001 | 2.69T | 2017 | 7.42T |
| 1986 | 672B | 2002 | 2.91T | 2018 | 7.96T |
| 1987 | 682B | 2003 | 3.1T | 2019 | 8.61T |
| 1988 | 703B | 2004 | 3.26T | 2020 | 9.01T |
| 1989 | 696B | 2005 | 3.46T | 2021 | 9.81T |
| 1990 | 729B | 2006 | 3.67T | 2022 | 10.85T |
| 1991 | 766B | 2007 | 3.91T | 2023 | 11.93T |
| 1992 | 812B | 2008 | 4.37T | 2024 | 13.03T |
| 1993 | 880B | 2009 | 4.58T | 2025 | 14.16T |
| 1994 | 1.21T | 2010 | 4.72T | 2026 | 15.46T |
| 1995 | 1.48T | 2011 | 5.04T | | |
Show data table
| 1980 | 2.02T | 1996 | 3.03T | 2012 | 5.8T |
| 1981 | 2.05T | 1997 | 3.2T | 2013 | 6.22T |
| 1982 | 2.09T | 1998 | 3.33T | 2014 | 6.62T |
| 1983 | 2.05T | 1999 | 3.47T | 2015 | 6.73T |
| 1984 | 2.06T | 2000 | 3.68T | 2016 | 6.96T |
| 1985 | 2.14T | 2001 | 3.87T | 2017 | 7.35T |
| 1986 | 2.2T | 2002 | 4.05T | 2018 | 7.83T |
| 1987 | 2.16T | 2003 | 4.19T | 2019 | 8.39T |
| 1988 | 2.23T | 2004 | 4.38T | 2020 | 8.71T |
| 1989 | 2.17T | 2005 | 4.45T | 2021 | 9.33T |
| 1990 | 2.36T | 2006 | 4.63T | 2022 | 9.91T |
| 1991 | 2.46T | 2007 | 4.91T | 2023 | 10.54T |
| 1992 | 2.53T | 2008 | 5.15T | 2024 | 11.33T |
| 1993 | 2.68T | 2009 | 5.27T | 2025 | 12.18T |
| 1994 | 2.74T | 2010 | 5.38T | 2026 | 13.03T |
| 1995 | 2.9T | 2011 | 5.54T | | |