Show data table
| 1951 | 32.1M | 1974 | 160M | 1997 | 4.78B |
| 1952 | 46.7M | 1975 | 139M | 1998 | 5.87B |
| 1953 | 64.9M | 1976 | 155M | 1999 | 6.95B |
| 1954 | 77.6M | 1977 | 169M | 2000 | 9.03B |
| 1955 | 71M | 1978 | 183M | 2001 | 9.46B |
| 1956 | 75M | 1979 | 191M | 2002 | 11B |
| 1957 | 79.4M | 1980 | 202M | 2003 | 24.2B |
| 1958 | 85.4M | 1981 | 205M | 2004 | 29.9B |
| 1959 | 86.3M | 1982 | 195M | 2005 | 33B |
| 1960 | 89.5M | 1983 | 192M | 2012 | 2.97B |
| 1961 | 85.6M | 1984 | 189M | 2013 | 2.37B |
| 1962 | 90.7M | 1985 | 197M | 2014 | 2.37B |
| 1963 | 100M | 1986 | 232M | 2015 | 2.55B |
| 1964 | 97.9M | 1987 | 204M | 2016 | 2.46B |
| 1965 | 107M | 1988 | 255M | 2017 | 2.21B |
| 1966 | 105M | 1989 | 550M | 2018 | 1.53B |
| 1967 | 102M | 1990 | 814M | 2019 | 1.52B |
| 1968 | 105M | 1991 | 943M | 2020 | 2.49B |
| 1969 | 114M | 1992 | 1.37B | 2021 | 2.64B |
| 1970 | 123M | 1993 | 2.06B | 2022 | 2.49B |
| 1971 | 128M | 1994 | 2.8B | 2023 | 2.49B |
| 1972 | 117M | 1995 | 3.93B | 2024 | 5.01B |
| 1973 | 152M | 1996 | 4.68B | | |
Show data table
| 1961 | 6.1% | 1981 | 3.5% | 2001 | 1.8% |
| 1962 | 5.7% | 1982 | 3.2% | 2002 | 1.4% |
| 1963 | 6.8% | 1983 | 3.1% | 2003 | 2% |
| 1964 | 6% | 1984 | 2.9% | 2004 | 1.8% |
| 1965 | 6.7% | 1985 | 3% | 2005 | 1.6% |
| 1966 | 6.1% | 1986 | 2.9% | 2012 | 3.9% |
| 1967 | 5.2% | 1987 | 2% | 2013 | 3.9% |
| 1968 | 5% | 1988 | 2.1% | 2014 | 3.6% |
| 1969 | 5.3% | 1989 | 3% | 2015 | 4.1% |
| 1970 | 5.6% | 1990 | 3.4% | 2016 | 3.8% |
| 1971 | 5.7% | 1991 | 3.2% | 2017 | 3.4% |
| 1972 | 5.5% | 1992 | 3.4% | 2018 | 2.2% |
| 1973 | 5.1% | 1993 | 3.5% | 2019 | 2% |
| 1974 | 4% | 1994 | 3.5% | 2020 | 3.3% |
| 1975 | 3.8% | 1995 | 3.7% | 2021 | 4.4% |
| 1976 | 3.8% | 1996 | 3.5% | 2022 | 3.8% |
| 1977 | 4% | 1997 | 2.3% | 2023 | 3.7% |
| 1978 | 3.9% | 1998 | 2.4% | 2024 | 6.6% |
| 1979 | 3.6% | 1999 | 2% | | |
| 1980 | 3.4% | 2000 | 2.2% | | |