Show data table
| 1980 | 1.24B | 1996 | 4.59B | 2012 | 11.8B |
| 1981 | 1.18B | 1997 | 4.31B | 2013 | 12.3B |
| 1982 | 1.13B | 1998 | 4.35B | 2014 | 13.1B |
| 1983 | 1.2B | 1999 | 4.6B | 2015 | 12B |
| 1984 | 1.11B | 2000 | 4.94B | 2016 | 12.6B |
| 1985 | 1.12B | 2001 | 4.88B | 2017 | 13.7B |
| 1986 | 1.52B | 2002 | 5.12B | 2018 | 14.7B |
| 1987 | 1.92B | 2003 | 6.16B | 2019 | 14.4B |
| 1988 | 2.23B | 2004 | 6.96B | 2020 | 11.4B |
| 1989 | 2.29B | 2005 | 6.87B | 2021 | 11.5B |
| 1990 | 2.74B | 2006 | 7.12B | 2022 | 12.9B |
| 1991 | 3.02B | 2007 | 8.26B | 2023 | 14.1B |
| 1992 | 3.4B | 2008 | 10.1B | 2024 | 15B |
| 1993 | 3.5B | 2009 | 9.25B | 2025 | 16.1B |
| 1994 | 3.89B | 2010 | 10.1B | 2026 | 17.1B |
| 1995 | 4.44B | 2011 | 11.7B | | |
Show data table
| 1980 | 9.54B | 1996 | 82.4B | 2012 | 355B |
| 1981 | 10.5B | 1997 | 90.8B | 2013 | 377B |
| 1982 | 12.3B | 1998 | 104B | 2014 | 400B |
| 1983 | 14B | 1999 | 116B | 2015 | 421B |
| 1984 | 15.3B | 2000 | 130B | 2016 | 448B |
| 1985 | 17.3B | 2001 | 142B | 2017 | 473B |
| 1986 | 20.3B | 2002 | 154B | 2018 | 500B |
| 1987 | 24.7B | 2003 | 172B | 2019 | 512B |
| 1988 | 29.9B | 2004 | 191B | 2020 | 449B |
| 1989 | 34.9B | 2005 | 203B | 2021 | 479B |
| 1990 | 40.8B | 2006 | 226B | 2022 | 570B |
| 1991 | 47.2B | 2007 | 259B | 2023 | 638B |
| 1992 | 52.9B | 2008 | 288B | 2024 | 696B |
| 1993 | 61.8B | 2009 | 296B | 2025 | 746B |
| 1994 | 69.8B | 2010 | 312B | 2026 | 802B |
| 1995 | 77.2B | 2011 | 335B | | |
Show data table
| 1980 | 83.1B | 1996 | 202B | 2012 | 400B |
| 1981 | 88B | 1997 | 214B | 2013 | 414B |
| 1982 | 92.8B | 1998 | 227B | 2014 | 430B |
| 1983 | 93.1B | 1999 | 232B | 2015 | 445B |
| 1984 | 97.6B | 2000 | 252B | 2016 | 463B |
| 1985 | 104B | 2001 | 260B | 2017 | 481B |
| 1986 | 114B | 2002 | 264B | 2018 | 500B |
| 1987 | 126B | 2003 | 280B | 2019 | 515B |
| 1988 | 135B | 2004 | 292B | 2020 | 440B |
| 1989 | 141B | 2005 | 296B | 2021 | 455B |
| 1990 | 151B | 2006 | 309B | 2022 | 494B |
| 1991 | 157B | 2007 | 327B | 2023 | 519B |
| 1992 | 168B | 2008 | 345B | 2024 | 544B |
| 1993 | 176B | 2009 | 356B | 2025 | 561B |
| 1994 | 184B | 2010 | 372B | 2026 | 580B |
| 1995 | 191B | 2011 | 387B | | |