Show data table
| 1997 | 8.7% | 2007 | 42.2% | 2017 | 26.5% |
| 1998 | 18.1% | 2008 | 44.1% | 2018 | 24.7% |
| 1999 | 26.1% | 2009 | 41.2% | 2019 | 25.1% |
| 2000 | 27.3% | 2010 | 38.8% | 2020 | 21.7% |
| 2001 | 32.7% | 2011 | 35.9% | 2021 | 19.9% |
| 2002 | 37.2% | 2012 | 37.6% | 2022 | 19.6% |
| 2003 | 43.7% | 2013 | 33.4% | 2023 | 18.2% |
| 2004 | 46.8% | 2014 | 34.9% | 2024 | 14.2% |
| 2005 | 45.8% | 2015 | 33.9% | 2025 | 11.8% |
| 2006 | 44.4% | 2016 | 29.2% | 2026 | 16.7% |
Show data table
| 1995 | 6M | 2006 | 63M | 2017 | 57M |
| 1996 | 9M | 2007 | 64M | 2018 | 54M |
| 1997 | 10M | 2008 | 65M | 2019 | 59M |
| 1998 | 20M | 2009 | 62M | 2020 | 52M |
| 1999 | 30M | 2010 | 63M | 2021 | 52M |
| 2000 | 31M | 2011 | 62M | 2022 | 51M |
| 2001 | 40M | 2012 | 68M | 2023 | 48M |
| 2002 | 49M | 2013 | 62M | 2024 | 40M |
| 2003 | 57M | 2014 | 65M | 2025 | 36M |
| 2004 | 62M | 2015 | 62M | 2026 | 57M |
| 2005 | 63M | 2016 | 59M | | |