Show data table
| 1989 | 2.27B | 2002 | 3.4B | 2015 | 11.5B |
| 1990 | 2.57B | 2003 | 4.97B | 2016 | 10.7B |
| 1991 | 2.84B | 2004 | 6.67B | 2017 | 12.9B |
| 1992 | 3.3B | 2005 | 7.32B | 2018 | 13.7B |
| 1993 | 3.16B | 2006 | 7.71B | 2019 | 12.5B |
| 1994 | 3.54B | 2007 | 8.73B | 2020 | 10.6B |
| 1995 | 3.95B | 2008 | 8.5B | 2021 | 12.4B |
| 1996 | 3.95B | 2009 | 8.92B | 2022 | 12.6B |
| 1997 | 4.11B | 2010 | 11.3B | 2023 | 12.4B |
| 1998 | 3.83B | 2011 | 12.4B | 2024 | 13.4B |
| 1999 | 3.82B | 2012 | 13B | 2025 | 14.8B |
| 2000 | 3.94B | 2013 | 12.2B | 2026 | 17.3B |
| 2001 | 3.58B | 2014 | 12.4B | | |
Show data table
| 1989 | 5.95B | 2002 | 35.7B | 2015 | 146B |
| 1990 | 6.65B | 2003 | 37.6B | 2016 | 158B |
| 1991 | 7.84B | 2004 | 43B | 2017 | 172B |
| 1992 | 9.4B | 2005 | 46.6B | 2018 | 181B |
| 1993 | 10.3B | 2006 | 52.2B | 2019 | 181B |
| 1994 | 12.6B | 2007 | 61.6B | 2020 | 174B |
| 1995 | 14.3B | 2008 | 70.1B | 2021 | 183B |
| 1996 | 17B | 2009 | 75.2B | 2022 | 206B |
| 1997 | 18.9B | 2010 | 82.6B | 2023 | 229B |
| 1998 | 21.2B | 2011 | 90.1B | 2024 | 245B |
| 1999 | 23.4B | 2012 | 107B | 2025 | 265B |
| 2000 | 27.3B | 2013 | 117B | 2026 | 289B |
| 2001 | 30.8B | 2014 | 135B | | |
Show data table
| 1990 | 52.9B | 2003 | 86.2B | 2016 | 146B |
| 1991 | 55.7B | 2004 | 92B | 2017 | 145B |
| 1992 | 60.8B | 2005 | 96.2B | 2018 | 146B |
| 1993 | 59.9B | 2006 | 100B | 2019 | 145B |
| 1994 | 61.7B | 2007 | 104B | 2020 | 133B |
| 1995 | 64.2B | 2008 | 106B | 2021 | 138B |
| 1996 | 66.2B | 2009 | 107B | 2022 | 145B |
| 1997 | 69B | 2010 | 113B | 2023 | 152B |
| 1998 | 71.3B | 2011 | 119B | 2024 | 157B |
| 1999 | 73.7B | 2012 | 125B | 2025 | 161B |
| 2000 | 76.3B | 2013 | 132B | 2026 | 165B |
| 2001 | 78.1B | 2014 | 140B | | |
| 2002 | 83.3B | 2015 | 146B | | |