Show data table
| 1980 | 3.97B | 1996 | 5.22B | 2012 | 18.5B |
| 1981 | 4.04B | 1997 | 5.74B | 2013 | 18.5B |
| 1982 | 4.27B | 1998 | 6.37B | 2014 | 19.8B |
| 1983 | 4.48B | 1999 | 6.42B | 2015 | 21B |
| 1984 | 4.92B | 2000 | 7.1B | 2016 | 21.7B |
| 1985 | 5.28B | 2001 | 7.65B | 2017 | 23.1B |
| 1986 | 5.68B | 2002 | 7.86B | 2018 | 24.1B |
| 1987 | 6.19B | 2003 | 8.23B | 2019 | 24.9B |
| 1988 | 6.88B | 2004 | 8.87B | 2020 | 23.4B |
| 1989 | 7.88B | 2005 | 9.76B | 2021 | 28.1B |
| 1990 | 4.92B | 2006 | 10.9B | 2022 | 31.4B |
| 1991 | 4.65B | 2007 | 12.4B | 2023 | 34.4B |
| 1992 | 4.94B | 2008 | 13.9B | 2024 | 37.1B |
| 1993 | 4.96B | 2009 | 14.6B | 2025 | 39.7B |
| 1994 | 4.64B | 2010 | 15.8B | 2026 | 41.5B |
| 1995 | 5.42B | 2011 | 17.7B | | |
Show data table
| 1980 | 7.94B | 1996 | 61.7B | 2012 | 361B |
| 1981 | 8.09B | 1997 | 75.4B | 2013 | 377B |
| 1982 | 8.53B | 1998 | 86.2B | 2014 | 415B |
| 1983 | 8.95B | 1999 | 92B | 2015 | 460B |
| 1984 | 9.83B | 2000 | 107B | 2016 | 496B |
| 1985 | 10.6B | 2001 | 118B | 2017 | 543B |
| 1986 | 11.4B | 2002 | 129B | 2018 | 575B |
| 1987 | 12.4B | 2003 | 143B | 2019 | 610B |
| 1988 | 13.8B | 2004 | 162B | 2020 | 574B |
| 1989 | 15.8B | 2005 | 184B | 2021 | 676B |
| 1990 | 20.2B | 2006 | 206B | 2022 | 769B |
| 1991 | 24.7B | 2007 | 234B | 2023 | 845B |
| 1992 | 27.2B | 2008 | 262B | 2024 | 920B |
| 1993 | 32.1B | 2009 | 276B | 2025 | 1.03T |
| 1994 | 39B | 2010 | 299B | 2026 | 1.11T |
| 1995 | 51.3B | 2011 | 335B | | |
Show data table
| 1980 | 59B | 1996 | 92.4B | 2012 | 173B |
| 1981 | 58.3B | 1997 | 96.7B | 2013 | 178B |
| 1982 | 57.1B | 1998 | 100B | 2014 | 183B |
| 1983 | 57.6B | 1999 | 99.4B | 2015 | 190B |
| 1984 | 61.2B | 2000 | 107B | 2016 | 197B |
| 1985 | 64.7B | 2001 | 110B | 2017 | 207B |
| 1986 | 68.1B | 2002 | 114B | 2018 | 215B |
| 1987 | 72.7B | 2003 | 119B | 2019 | 221B |
| 1988 | 73.9B | 2004 | 126B | 2020 | 201B |
| 1989 | 75.9B | 2005 | 134B | 2021 | 226B |
| 1990 | 78.1B | 2006 | 143B | 2022 | 235B |
| 1991 | 75.5B | 2007 | 152B | 2023 | 244B |
| 1992 | 80.1B | 2008 | 158B | 2024 | 252B |
| 1993 | 85.3B | 2009 | 154B | 2025 | 262B |
| 1994 | 85.4B | 2010 | 160B | 2026 | 270B |
| 1995 | 90.7B | 2011 | 166B | | |