Show data table
| 1980 | 147M | 1996 | 503M | 2012 | 1.06B |
| 1981 | 154M | 1997 | 563M | 2013 | 1.33B |
| 1982 | 148M | 1998 | 608M | 2014 | 1.39B |
| 1983 | 147M | 1999 | 623M | 2015 | 1.43B |
| 1984 | 151M | 2000 | 615M | 2016 | 1.57B |
| 1985 | 169M | 2001 | 622M | 2017 | 1.68B |
| 1986 | 208M | 2002 | 698M | 2018 | 1.78B |
| 1987 | 249M | 2003 | 706M | 2019 | 1.87B |
| 1988 | 284M | 2004 | 839M | 2020 | 1.38B |
| 1989 | 305M | 2005 | 919M | 2021 | 1.49B |
| 1990 | 369M | 2006 | 1.02B | 2022 | 2B |
| 1991 | 374M | 2007 | 1.03B | 2023 | 2.17B |
| 1992 | 434M | 2008 | 998M | 2024 | 2.23B |
| 1993 | 474M | 2009 | 847M | 2025 | 2.32B |
| 1994 | 486M | 2010 | 970M | 2026 | 2.25B |
| 1995 | 508M | 2011 | 1.02B | | |
Show data table
| 1980 | 942M | 1996 | 2.5B | 2012 | 14.5B |
| 1981 | 972M | 1997 | 2.83B | 2013 | 16B |
| 1982 | 968M | 1998 | 3.2B | 2014 | 17.7B |
| 1983 | 993M | 1999 | 3.33B | 2015 | 19.1B |
| 1984 | 1.07B | 2000 | 3.51B | 2016 | 20.9B |
| 1985 | 1.21B | 2001 | 3.65B | 2017 | 22.9B |
| 1986 | 1.28B | 2002 | 3.82B | 2018 | 24.8B |
| 1987 | 1.4B | 2003 | 3.81B | 2019 | 26.2B |
| 1988 | 1.53B | 2004 | 4.62B | 2020 | 24.4B |
| 1989 | 1.72B | 2005 | 5.06B | 2021 | 25.2B |
| 1990 | 1.97B | 2006 | 5.61B | 2022 | 28.5B |
| 1991 | 1.98B | 2007 | 6.93B | 2023 | 30.4B |
| 1992 | 2.22B | 2008 | 9.15B | 2024 | 32.4B |
| 1993 | 2.46B | 2009 | 11.5B | 2025 | 34.1B |
| 1994 | 2.46B | 2010 | 11.7B | 2026 | 35.4B |
| 1995 | 2.42B | 2011 | 12.6B | | |
Show data table
| 1980 | 5.34B | 1996 | 9.67B | 2012 | 15.9B |
| 1981 | 5.14B | 1997 | 10.8B | 2013 | 16.9B |
| 1982 | 5.03B | 1998 | 11.1B | 2014 | 17.7B |
| 1983 | 5B | 1999 | 11.3B | 2015 | 19.3B |
| 1984 | 5.21B | 2000 | 11.8B | 2016 | 21.6B |
| 1985 | 5.75B | 2001 | 11.5B | 2017 | 23.1B |
| 1986 | 5.79B | 2002 | 11.7B | 2018 | 24.2B |
| 1987 | 6.08B | 2003 | 11B | 2019 | 25.6B |
| 1988 | 6.4B | 2004 | 10.7B | 2020 | 22.6B |
| 1989 | 7.06B | 2005 | 11.6B | 2021 | 22.7B |
| 1990 | 7.58B | 2006 | 12.7B | 2022 | 24.9B |
| 1991 | 7.79B | 2007 | 14.1B | 2023 | 26.2B |
| 1992 | 8.35B | 2008 | 13.8B | 2024 | 27.1B |
| 1993 | 8.96B | 2009 | 13.6B | 2025 | 28.5B |
| 1994 | 8.74B | 2010 | 14.5B | 2026 | 28.9B |
| 1995 | 8.79B | 2011 | 15.3B | | |