Show data table
| 1980 | 6,094 | 1996 | 5,553 | 2012 | 9,903 |
| 1981 | 5,377 | 1997 | 5,068 | 2013 | 9,761 |
| 1982 | 4,931 | 1998 | 4,162 | 2014 | 9,747 |
| 1983 | 4,619 | 1999 | 4,223 | 2015 | 7,453 |
| 1984 | 4,346 | 2000 | 4,477 | 2016 | 7,082 |
| 1985 | 4,478 | 2001 | 4,066 | 2017 | 7,370 |
| 1986 | 5,735 | 2002 | 4,210 | 2018 | 8,199 |
| 1987 | 4,246 | 2003 | 5,016 | 2019 | 8,111 |
| 1988 | 4,581 | 2004 | 5,838 | 2020 | 7,289 |
| 1989 | 4,899 | 2005 | 6,943 | 2021 | 9,114 |
| 1990 | 6,816 | 2006 | 7,271 | 2022 | 9,478 |
| 1991 | 5,993 | 2007 | 8,652 | 2023 | 9,079 |
| 1992 | 6,016 | 2008 | 10,418 | 2024 | 9,258 |
| 1993 | 5,678 | 2009 | 7,857 | 2025 | 9,376 |
| 1994 | 4,294 | 2010 | 8,933 | 2026 | 9,918 |
| 1995 | 4,957 | 2011 | 10,893 | | |
Show data table
| 1980 | 1.29M | 1996 | 2.84M | 2012 | 5.05M |
| 1981 | 1.46M | 1997 | 2.96M | 2013 | 4.82M |
| 1982 | 1.62M | 1998 | 2.46M | 2014 | 4.81M |
| 1983 | 1.76M | 1999 | 2.6M | 2015 | 4.41M |
| 1984 | 1.9M | 2000 | 3.19M | 2016 | 4.2M |
| 1985 | 2.01M | 2001 | 2.98M | 2017 | 4.28M |
| 1986 | 1.99M | 2002 | 2.92M | 2018 | 4.55M |
| 1987 | 1.28M | 2003 | 2.91M | 2019 | 4.75M |
| 1988 | 1.36M | 2004 | 3.08M | 2020 | 4.19M |
| 1989 | 1.56M | 2005 | 3.66M | 2021 | 5.05M |
| 1990 | 1.86M | 2006 | 3.8M | 2022 | 5.9M |
| 1991 | 1.69M | 2007 | 4.14M | 2023 | 5.51M |
| 1992 | 1.59M | 2008 | 4.65M | 2024 | 5.61M |
| 1993 | 1.61M | 2009 | 3.7M | 2025 | 5.45M |
| 1994 | 2.38M | 2010 | 4.42M | 2026 | 5.52M |
| 1995 | 2.47M | 2011 | 5.13M | | |
Show data table
| 1980 | 3.47M | 1996 | 3.37M | 2012 | 2.69M |
| 1981 | 3.26M | 1997 | 3.48M | 2013 | 2.73M |
| 1982 | 3.32M | 1998 | 3.51M | 2014 | 2.76M |
| 1983 | 3.31M | 1999 | 3.12M | 2015 | 2.77M |
| 1984 | 3.4M | 2000 | 2.99M | 2016 | 2.76M |
| 1985 | 3.52M | 2001 | 2.98M | 2017 | 2.71M |
| 1986 | 3.37M | 2002 | 2.9M | 2018 | 2.7M |
| 1987 | 2.79M | 2003 | 2.89M | 2019 | 2.76M |
| 1988 | 2.83M | 2004 | 2.84M | 2020 | 2.68M |
| 1989 | 3.19M | 2005 | 2.88M | 2021 | 2.68M |
| 1990 | 3.28M | 2006 | 2.71M | 2022 | 2.73M |
| 1991 | 3.38M | 2007 | 2.8M | 2023 | 2.74M |
| 1992 | 3.17M | 2008 | 2.61M | 2024 | 2.77M |
| 1993 | 3.22M | 2009 | 2.49M | 2025 | 2.78M |
| 1994 | 3.26M | 2010 | 2.57M | 2026 | 2.79M |
| 1995 | 3.34M | 2011 | 2.66M | | |