Show data table
| 1955 | 10.7M | 1979 | 90.2M | 2003 | 179M |
| 1956 | 11.4M | 1980 | 104M | 2004 | 115M |
| 1957 | 12.2M | 1981 | 163M | 2005 | 104M |
| 1958 | 12.1M | 1982 | 177M | 2006 | 131M |
| 1959 | 13.1M | 1983 | 184M | 2007 | 136M |
| 1960 | 12.1M | 1984 | 207M | 2008 | 166M |
| 1961 | 12.1M | 1985 | 224M | 2009 | 147M |
| 1962 | 12M | 1986 | 141M | 2010 | 170M |
| 1963 | 14.8M | 1987 | 124M | 2011 | 197M |
| 1964 | 13M | 1988 | 147M | 2012 | 224M |
| 1965 | 18.6M | 1989 | 152M | 2013 | 250M |
| 1966 | 19.1M | 1990 | 132M | 2014 | 246M |
| 1967 | 21.2M | 1991 | 119M | 2015 | 252M |
| 1968 | 20.4M | 1992 | 154M | 2016 | 291M |
| 1969 | 17.6M | 1993 | 144M | 2017 | 275M |
| 1970 | 32.3M | 1994 | 153M | 2018 | 273M |
| 1971 | 22.2M | 1995 | 158M | 2019 | 332M |
| 1972 | 24M | 1996 | 141M | 2020 | 343M |
| 1973 | 23.4M | 1997 | 132M | 2021 | 338M |
| 1974 | 28.4M | 1998 | 140M | 2022 | 441M |
| 1975 | 44.9M | 1999 | 124M | 2023 | 438M |
| 1976 | 55.5M | 2000 | 158M | 2024 | 453M |
| 1977 | 75.2M | 2001 | 197M | 2025 | 633M |
| 1978 | 71.7M | 2002 | 158M | | |
Show data table
| 1955 | 1.3% | 1979 | 1.3% | 2003 | 0.8% |
| 1956 | 1.3% | 1980 | 1.3% | 2004 | 0.5% |
| 1957 | 1.3% | 1981 | 1.9% | 2005 | 0.4% |
| 1958 | 1.2% | 1982 | 2% | 2006 | 0.4% |
| 1959 | 1.3% | 1983 | 2% | 2007 | 0.4% |
| 1960 | 1.2% | 1984 | 2.2% | 2008 | 0.5% |
| 1961 | 1.1% | 1985 | 2% | 2009 | 0.4% |
| 1962 | 1% | 1986 | 1.7% | 2010 | 0.4% |
| 1963 | 1.2% | 1987 | 1.8% | 2011 | 0.5% |
| 1964 | 1% | 1988 | 1.9% | 2012 | 0.5% |
| 1965 | 1.4% | 1989 | 1.8% | 2013 | 0.5% |
| 1966 | 1.4% | 1990 | 1.7% | 2014 | 0.4% |
| 1967 | 1.5% | 1991 | 1.3% | 2015 | 0.4% |
| 1968 | 1.3% | 1992 | 1.5% | 2016 | 0.4% |
| 1969 | 1% | 1993 | 1.3% | 2017 | 0.4% |
| 1970 | 1.7% | 1994 | 1.2% | 2018 | 0.4% |
| 1971 | 1.1% | 1995 | 1.1% | 2019 | 0.4% |
| 1972 | 1.1% | 1996 | 0.9% | 2020 | 0.4% |
| 1973 | 0.9% | 1997 | 0.7% | 2021 | 0.4% |
| 1974 | 0.9% | 1998 | 0.7% | 2022 | 0.5% |
| 1975 | 1.2% | 1999 | 0.7% | 2023 | 0.4% |
| 1976 | 1.3% | 2000 | 0.9% | 2024 | 0.4% |
| 1977 | 1.4% | 2001 | 1.1% | 2025 | 0.5% |
| 1978 | 1.2% | 2002 | 0.8% | | |