Show data table
| 1980 | 2.71B | 1996 | 2.19B | 2012 | 5.75B |
| 1981 | 2.9B | 1997 | 1.97B | 2013 | 6.74B |
| 1982 | 3.26B | 1998 | 1.56B | 2014 | 6.52B |
| 1983 | 2.84B | 1999 | 1.56B | 2015 | 6.75B |
| 1984 | 3.28B | 2000 | 1.5B | 2016 | 6.04B |
| 1985 | 2.79B | 2001 | 1.73B | 2017 | 5.82B |
| 1986 | 2.09B | 2002 | 1.99B | 2018 | 6.39B |
| 1987 | 1.82B | 2003 | 2.22B | 2019 | 6.52B |
| 1988 | 2.99B | 2004 | 2.34B | 2020 | 6.68B |
| 1989 | 2.75B | 2005 | 2.74B | 2021 | 7.17B |
| 1990 | 1.51B | 2006 | 3.14B | 2022 | 7.12B |
| 1991 | 1.81B | 2007 | 3.45B | 2023 | 6.4B |
| 1992 | 1.58B | 2008 | 3.93B | 2024 | 6.97B |
| 1993 | 1.79B | 2009 | 3.8B | 2025 | 7.71B |
| 1994 | 2.12B | 2010 | 4.17B | 2026 | 8.27B |
| 1995 | 2.03B | 2011 | 4.8B | | |
Show data table
| 1980 | 2.84B | 1996 | 2.01T | 2012 | 24.96T |
| 1981 | 3.37B | 1997 | 1.94T | 2013 | 29.21T |
| 1982 | 4.04B | 1998 | 2.44T | 2014 | 29.55T |
| 1983 | 5.35B | 1999 | 2.81T | 2015 | 34.26T |
| 1984 | 8.24B | 2000 | 3.09T | 2016 | 37.97T |
| 1985 | 14.2B | 2001 | 3.45T | 2017 | 42.99T |
| 1986 | 33.7B | 2002 | 4.19T | 2018 | 50.69T |
| 1987 | 62.1B | 2003 | 5.23T | 2019 | 58.78T |
| 1988 | 97.2B | 2004 | 6.36T | 2020 | 65.75T |
| 1989 | 164B | 2005 | 7.92T | 2021 | 74.82T |
| 1990 | 229B | 2006 | 9.32T | 2022 | 100.04T |
| 1991 | 535B | 2007 | 10.3T | 2023 | 136.69T |
| 1992 | 789B | 2008 | 11.68T | 2024 | 157.46T |
| 1993 | 1.01T | 2009 | 12.85T | 2025 | 174.68T |
| 1994 | 1.24T | 2010 | 16.6T | 2026 | 193.46T |
| 1995 | 1.53T | 2011 | 20.87T | | |
Show data table
| 1980 | 32T | 1996 | 20.14T | 2012 | 42.75T |
| 1981 | 32.6T | 1997 | 16.59T | 2013 | 46.78T |
| 1982 | 33.18T | 1998 | 16.45T | 2014 | 46.49T |
| 1983 | 32.66T | 1999 | 15.12T | 2015 | 45.05T |
| 1984 | 33.22T | 2000 | 15.69T | 2016 | 47.16T |
| 1985 | 30.98T | 2001 | 18.55T | 2017 | 49.02T |
| 1986 | 31.02T | 2002 | 23.45T | 2018 | 50.69T |
| 1987 | 31.76T | 2003 | 25.86T | 2019 | 53.48T |
| 1988 | 32.41T | 2004 | 27.88T | 2020 | 52.81T |
| 1989 | 34.02T | 2005 | 29.75T | 2021 | 55.92T |
| 1990 | 34.56T | 2006 | 31.12T | 2022 | 58.89T |
| 1991 | 31.8T | 2007 | 32.28T | 2023 | 62.25T |
| 1992 | 28.73T | 2008 | 33.52T | 2024 | 64.93T |
| 1993 | 28.75T | 2009 | 33.97T | 2025 | 67.77T |
| 1994 | 29.76T | 2010 | 37.39T | 2026 | 70.85T |
| 1995 | 26.77T | 2011 | 40.05T | | |