Show data table
| 1985 | 7.25M | 1999 | 11.1M | 2013 | 13.8M |
| 1986 | 9.76M | 2000 | 10.3M | 2014 | 30.9M |
| 1987 | 11.3M | 2001 | 11.1M | 2015 | 18.1M |
| 1988 | 12.1M | 2002 | 11.7M | 2016 | 21.9M |
| 1989 | 13M | 2003 | 12.2M | 2017 | 22.2M |
| 1990 | 14.8M | 2004 | 15.9M | 2018 | 21.5M |
| 1991 | 16.6M | 2005 | 14.7M | 2019 | 21.7M |
| 1992 | 20.5M | 2006 | 14.4M | 2020 | 18.9M |
| 1993 | 12.9M | 2007 | 15.2M | 2021 | 36.6M |
| 1994 | 11.9M | 2008 | 11.1M | 2022 | 23.4M |
| 1995 | 11.6M | 2009 | 8.65M | 2023 | 29.3M |
| 1996 | 10.5M | 2010 | 7.16M | 2024 | 27.6M |
| 1997 | 11.4M | 2011 | 8.71M | 2025 | 28.4M |
| 1998 | 10.5M | 2012 | 9.92M | | |
Show data table
| 1985 | 4.3% | 1999 | 1.8% | 2013 | 1% |
| 1986 | 4.7% | 2000 | 1.7% | 2014 | 2.2% |
| 1987 | 4.5% | 2001 | 1.8% | 2015 | 1.3% |
| 1988 | 4.3% | 2002 | 1.7% | 2016 | 1.4% |
| 1989 | 4.3% | 2003 | 1.7% | 2017 | 1.3% |
| 1990 | 4% | 2004 | 1.9% | 2018 | 1.2% |
| 1991 | 4.4% | 2005 | 1.6% | 2019 | 1.2% |
| 1992 | 4.7% | 2006 | 1.4% | 2020 | 1.4% |
| 1993 | 2.8% | 2007 | 1.5% | 2021 | 2.5% |
| 1994 | 2.4% | 2008 | 1.2% | 2022 | 1.2% |
| 1995 | 2.3% | 2009 | 1% | 2023 | 1.3% |
| 1996 | 2.1% | 2010 | 0.7% | 2024 | 1.3% |
| 1997 | 2% | 2011 | 0.9% | 2025 | 1.2% |
| 1998 | 1.7% | 2012 | 0.9% | | |