Show data table
| 1991 | 63.3% | 2003 | 52.6% | 2015 | 52.4% |
| 1992 | 62.1% | 2004 | 51.6% | 2016 | 58.9% |
| 1993 | 63.8% | 2005 | 50% | 2017 | 67.1% |
| 1994 | 63.9% | 2006 | 45.7% | 2018 | 72.9% |
| 1995 | 65.6% | 2007 | 42.7% | 2019 | 67.3% |
| 1996 | 66.8% | 2008 | 41.4% | 2020 | 77.7% |
| 1997 | 66.6% | 2009 | 40.3% | 2021 | 79.7% |
| 1998 | 58.2% | 2010 | 38.8% | 2022 | 83% |
| 1999 | 61.9% | 2011 | 43.3% | 2023 | 84% |
| 2000 | 62.9% | 2012 | 49% | 2024 | 85.7% |
| 2001 | 52.2% | 2013 | 45.6% | 2025 | 81.3% |
| 2002 | 51.6% | 2014 | 50.7% | 2026 | 84.9% |
Show data table
| 1991 | 8.72B | 2003 | 19.5B | 2015 | 47.1B |
| 1992 | 9.78B | 2004 | 21B | 2016 | 56.1B |
| 1993 | 10.7B | 2005 | 22B | 2017 | 68.4B |
| 1994 | 11.6B | 2006 | 21.9B | 2018 | 82.4B |
| 1995 | 12.8B | 2007 | 22.3B | 2019 | 82.8B |
| 1996 | 14.5B | 2008 | 24B | 2020 | 92.9B |
| 1997 | 16B | 2009 | 24.8B | 2021 | 104B |
| 1998 | 15.2B | 2010 | 25.7B | 2022 | 115B |
| 1999 | 17.7B | 2011 | 29.4B | 2023 | 127B |
| 2000 | 19.4B | 2012 | 36.2B | 2024 | 137B |
| 2001 | 17.4B | 2013 | 36.1B | 2025 | 140B |
| 2002 | 17.8B | 2014 | 43.3B | 2026 | 158B |