Show data table
| 1988 | 2.5% | 2001 | 17% | 2014 | 9% |
| 1989 | 5% | 2002 | 13.3% | 2015 | 18.8% |
| 1990 | 7.7% | 2003 | 12.3% | 2016 | 21.2% |
| 1991 | 8.4% | 2004 | 13.6% | 2017 | 20.2% |
| 1992 | 7.3% | 2005 | 12.1% | 2018 | 19% |
| 1993 | 10.9% | 2006 | 12.9% | 2019 | 18.5% |
| 1994 | 12.3% | 2007 | 11.1% | 2020 | 21% |
| 1995 | 12.3% | 2008 | 13.9% | 2021 | 17.3% |
| 1996 | 11% | 2009 | 10.3% | 2022 | 16.2% |
| 1997 | 10.7% | 2010 | 9.4% | 2023 | 11.3% |
| 1998 | 9.8% | 2011 | 8.8% | 2024 | 8.9% |
| 1999 | 11.8% | 2012 | 8.1% | 2025 | 8% |
| 2000 | 12.7% | 2013 | 8.9% | 2026 | 7.7% |
Show data table
| 1988 | 1M | 2001 | 21M | 2014 | 20M |
| 1989 | 2M | 2002 | 18M | 2015 | 48M |
| 1990 | 4M | 2003 | 18M | 2016 | 59M |
| 1991 | 4M | 2004 | 19M | 2017 | 59M |
| 1992 | 6M | 2005 | 18M | 2018 | 59M |
| 1993 | 9M | 2006 | 19M | 2019 | 58M |
| 1994 | 11M | 2007 | 18M | 2020 | 67M |
| 1995 | 11M | 2008 | 24M | 2021 | 66M |
| 1996 | 11M | 2009 | 18M | 2022 | 64M |
| 1997 | 12M | 2010 | 17M | 2023 | 50M |
| 1998 | 12M | 2011 | 17M | 2024 | 46M |
| 1999 | 14M | 2012 | 16M | 2025 | 43M |
| 2000 | 16M | 2013 | 19M | 2026 | 44M |