Show data table
| 1965 | 2.7M | 1982 | 43.4M | 2010 | 8.46M |
| 1966 | 2.8M | 1983 | 38.8M | 2011 | 13.3M |
| 1967 | 3.05M | 1984 | 24.9M | 2012 | 15.2M |
| 1968 | 3.05M | 1985 | 25.1M | 2013 | 15.1M |
| 1969 | 3.05M | 1986 | 24.3M | 2014 | 14.5M |
| 1970 | 3.55M | 1987 | 22.2M | 2015 | 14.8M |
| 1971 | 4.05M | 1988 | 25M | 2016 | 14.7M |
| 1972 | 4.05M | 1991 | 25M | 2017 | 13.3M |
| 1973 | 3.75M | 1992 | 22.6M | 2018 | 13.2M |
| 1974 | 4.55M | 1993 | 30.4M | 2019 | 12.9M |
| 1975 | 5.5M | 1994 | 39.3M | 2020 | 12.9M |
| 1976 | 6.4M | 2004 | 3.18M | 2021 | 29.7M |
| 1977 | 7.75M | 2005 | 8.03M | 2022 | 52.2M |
| 1978 | 8.9M | 2006 | 3.92M | 2023 | 62.5M |
| 1979 | 9.4M | 2007 | 3.49M | 2024 | 33.8M |
| 1980 | 12.8M | 2008 | 3.91M | 2025 | 44.2M |
| 1981 | 26.3M | 2009 | 7.19M | | |
Show data table
| 1965 | 1.2% | 1982 | 5% | 2010 | 0.4% |
| 1966 | 1.1% | 1983 | 4.7% | 2011 | 0.6% |
| 1967 | 1.2% | 1984 | 2.9% | 2012 | 0.6% |
| 1968 | 1.1% | 1985 | 3% | 2013 | 0.5% |
| 1969 | 1% | 1986 | 2.9% | 2014 | 0.5% |
| 1970 | 1.1% | 1987 | 2.3% | 2015 | 0.5% |
| 1971 | 1.2% | 1988 | 2.4% | 2016 | 0.5% |
| 1972 | 1.1% | 1991 | 7.2% | 2017 | 0.4% |
| 1973 | 1% | 1992 | 10.1% | 2018 | 0.4% |
| 1974 | 0.9% | 1993 | 19% | 2019 | 0.4% |
| 1975 | 1% | 1994 | 29.7% | 2020 | 0.4% |
| 1976 | 1.1% | 2004 | 0.4% | 2021 | 0.8% |
| 1977 | 1.2% | 2005 | 0.9% | 2022 | 1.3% |
| 1978 | 1.2% | 2006 | 0.4% | 2023 | 1.4% |
| 1979 | 1.2% | 2007 | 0.3% | 2024 | 0.7% |
| 1980 | 1.5% | 2008 | 0.2% | 2025 | 0.9% |
| 1981 | 3.1% | 2009 | 0.4% | | |