Show data table
| 1992 | 31.6M | 2004 | 101M | 2016 | 131M |
| 1993 | 39.3M | 2005 | 110M | 2017 | 144M |
| 1994 | 49.6M | 2006 | 141M | 2018 | 176M |
| 1995 | 50.9M | 2007 | 195M | 2019 | 197M |
| 1996 | 45.7M | 2008 | 256M | 2020 | 196M |
| 1997 | 29.8M | 2009 | 183M | 2021 | 223M |
| 1998 | 33.6M | 2010 | 186M | 2022 | 229M |
| 1999 | 42.8M | 2011 | 197M | 2023 | 400M |
| 2000 | 45.4M | 2012 | 183M | 2024 | 535M |
| 2001 | 53.2M | 2013 | 180M | 2025 | 624M |
| 2002 | 58.6M | 2014 | 178M | | |
| 2003 | 76.1M | 2015 | 132M | | |
Show data table
| 1980 | 6.1% | 1996 | 1.4% | 2012 | 1.5% |
| 1981 | 5.8% | 1997 | 1.3% | 2013 | 1.4% |
| 1982 | 5.7% | 1998 | 1.3% | 2014 | 1.3% |
| 1983 | 5.4% | 1999 | 1.3% | 2015 | 1.2% |
| 1984 | 6.1% | 2000 | 1.3% | 2016 | 1.1% |
| 1985 | 5.7% | 2001 | 1.3% | 2017 | 1.1% |
| 1986 | 5.6% | 2002 | 1.3% | 2018 | 1.1% |
| 1987 | 5.9% | 2003 | 1.3% | 2019 | 1.3% |
| 1988 | 5.6% | 2004 | 1.4% | 2020 | 1.3% |
| 1989 | 5.2% | 2005 | 1.3% | 2021 | 1.2% |
| 1990 | 5.9% | 2006 | 1.5% | 2022 | 1.2% |
| 1991 | 5.8% | 2007 | 1.8% | 2023 | 1.7% |
| 1992 | 4.7% | 2008 | 1.9% | 2024 | 2% |
| 1993 | 3.2% | 2009 | 1.5% | 2025 | 2% |
| 1994 | 2.5% | 2010 | 1.5% | | |
| 1995 | 1.8% | 2011 | 1.5% | | |