Show data table
| 1993 | 1.79B | 2005 | 14.1B | 2017 | 27.5B |
| 1994 | 2.51B | 2006 | 17B | 2018 | 31.2B |
| 1995 | 3.91B | 2007 | 22.5B | 2019 | 31.9B |
| 1996 | 4.79B | 2008 | 24.4B | 2020 | 31.8B |
| 1997 | 5.16B | 2009 | 19.7B | 2021 | 37.2B |
| 1998 | 5.68B | 2010 | 19.6B | 2022 | 38.3B |
| 1999 | 5.77B | 2011 | 23.3B | 2023 | 41.5B |
| 2000 | 5.71B | 2012 | 23.3B | 2024 | 43.1B |
| 2001 | 6.27B | 2013 | 25.5B | 2025 | 47B |
| 2002 | 7.39B | 2014 | 27.1B | 2026 | 51.6B |
| 2003 | 9.89B | 2015 | 23.3B | | |
| 2004 | 12.2B | 2016 | 24.6B | | |
Show data table
| 1993 | 1.51B | 2005 | 11.3B | 2017 | 24.3B |
| 1994 | 2.08B | 2006 | 13.6B | 2018 | 26.4B |
| 1995 | 2.86B | 2007 | 16.4B | 2019 | 28.5B |
| 1996 | 3.68B | 2008 | 16.6B | 2020 | 27.9B |
| 1997 | 4.57B | 2009 | 14.1B | 2021 | 31.5B |
| 1998 | 5.1B | 2010 | 14.7B | 2022 | 36.3B |
| 1999 | 5.41B | 2011 | 16.7B | 2023 | 38.4B |
| 2000 | 6.17B | 2012 | 18.1B | 2024 | 39.8B |
| 2001 | 6.98B | 2013 | 19.2B | 2025 | 41.6B |
| 2002 | 7.83B | 2014 | 20.4B | 2026 | 43.8B |
| 2003 | 8.75B | 2015 | 21B | | |
| 2004 | 9.78B | 2016 | 22.2B | | |
Show data table
| 1993 | 10.8B | 2005 | 20.9B | 2017 | 26.7B |
| 1994 | 10.6B | 2006 | 23B | 2018 | 27.7B |
| 1995 | 10.8B | 2007 | 24.7B | 2019 | 28.7B |
| 1996 | 11.4B | 2008 | 23.4B | 2020 | 27.9B |
| 1997 | 12.8B | 2009 | 20B | 2021 | 30.2B |
| 1998 | 13.4B | 2010 | 20.5B | 2022 | 29.8B |
| 1999 | 13.3B | 2011 | 22.1B | 2023 | 29B |
| 2000 | 14.7B | 2012 | 22.9B | 2024 | 28.9B |
| 2001 | 15.5B | 2013 | 23.3B | 2025 | 29.1B |
| 2002 | 16.6B | 2014 | 24B | 2026 | 29.5B |
| 2003 | 17.9B | 2015 | 24.5B | | |
| 2004 | 19.1B | 2016 | 25.2B | | |