Show data table
| 1980 | 4.25B | 1996 | 3.6B | 2012 | 25.5B |
| 1981 | 4.39B | 1997 | 4.3B | 2013 | 28B |
| 1982 | 4.23B | 1998 | 3.54B | 2014 | 27.1B |
| 1983 | 3.65B | 1999 | 3.41B | 2015 | 21.2B |
| 1984 | 3B | 2000 | 3.6B | 2016 | 21B |
| 1985 | 2.85B | 2001 | 3.87B | 2017 | 25.9B |
| 1986 | 1.96B | 2002 | 4.19B | 2018 | 26.3B |
| 1987 | 2.43B | 2003 | 4.9B | 2019 | 23.3B |
| 1988 | 4.09B | 2004 | 6.22B | 2020 | 18.1B |
| 1989 | 4.37B | 2005 | 8.33B | 2021 | 22.1B |
| 1990 | 4.08B | 2006 | 12.8B | 2022 | 29.2B |
| 1991 | 3.69B | 2007 | 14.1B | 2023 | 27.6B |
| 1992 | 3.61B | 2008 | 17.9B | 2024 | 25.3B |
| 1993 | 3.55B | 2009 | 15.3B | 2025 | 28.9B |
| 1994 | 3.66B | 2010 | 20.3B | 2026 | 41.2B |
| 1995 | 3.8B | 2011 | 23.5B | | |
Show data table
| 1980 | 3M | 1996 | 4.35B | 2012 | 131B |
| 1981 | 4M | 1997 | 5.66B | 2013 | 151B |
| 1982 | 4M | 1998 | 6.59B | 2014 | 167B |
| 1983 | 5M | 1999 | 8.13B | 2015 | 183B |
| 1984 | 5M | 2000 | 11.2B | 2016 | 216B |
| 1985 | 8M | 2001 | 14.8B | 2017 | 246B |
| 1986 | 14M | 2002 | 18.4B | 2018 | 275B |
| 1987 | 22M | 2003 | 23.2B | 2019 | 300B |
| 1988 | 34M | 2004 | 29.7B | 2020 | 333B |
| 1989 | 60M | 2005 | 37.2B | 2021 | 442B |
| 1990 | 124M | 2006 | 46B | 2022 | 494B |
| 1991 | 239M | 2007 | 56.3B | 2023 | 557B |
| 1992 | 622M | 2008 | 67.1B | 2024 | 662B |
| 1993 | 1.62B | 2009 | 77.3B | 2025 | 726B |
| 1994 | 2.45B | 2010 | 97.2B | 2026 | 825B |
| 1995 | 3.29B | 2011 | 114B | | |
Show data table
| 1980 | 39.9B | 1996 | 42.2B | 2012 | 110B |
| 1981 | 42.6B | 1997 | 43.8B | 2013 | 116B |
| 1982 | 41.3B | 1998 | 43.6B | 2014 | 121B |
| 1983 | 40.9B | 1999 | 45.6B | 2015 | 125B |
| 1984 | 40.2B | 2000 | 47.4B | 2016 | 130B |
| 1985 | 40.7B | 2001 | 49.9B | 2017 | 134B |
| 1986 | 41.4B | 2002 | 52.2B | 2018 | 140B |
| 1987 | 42B | 2003 | 55.8B | 2019 | 142B |
| 1988 | 45.9B | 2004 | 59.7B | 2020 | 138B |
| 1989 | 44.2B | 2005 | 64B | 2021 | 146B |
| 1990 | 43.9B | 2006 | 69.1B | 2022 | 154B |
| 1991 | 43.6B | 2007 | 74.9B | 2023 | 162B |
| 1992 | 44.5B | 2008 | 80.7B | 2024 | 168B |
| 1993 | 44.5B | 2009 | 88.1B | 2025 | 175B |
| 1994 | 38.6B | 2010 | 97.2B | 2026 | 182B |
| 1995 | 39.7B | 2011 | 103B | | |