데이터 표
| 1957 | 2.01억 | 1980 | 20억 | 2003 | 32.7억 |
| 1958 | 2.19억 | 1981 | 18.1억 | 2004 | 35억 |
| 1959 | 2.11억 | 1982 | 19.3억 | 2005 | 34.8억 |
| 1960 | 2억 | 1983 | 19.5억 | 2006 | 33.3억 |
| 1961 | 2.37억 | 1984 | 18.1억 | 2007 | 35.2억 |
| 1962 | 2.74억 | 1985 | 19.7억 | 2008 | 41억 |
| 1963 | 2.95억 | 1986 | 25.7억 | 2009 | 40.6억 |
| 1964 | 3.3억 | 1987 | 30.2억 | 2010 | 41.2억 |
| 1965 | 3.43억 | 1988 | 32.8억 | 2011 | 49.7억 |
| 1966 | 3.78억 | 1989 | 30.8억 | 2012 | 45.9억 |
| 1967 | 3.83억 | 1990 | 40.6억 | 2013 | 50.3억 |
| 1968 | 3.74억 | 1991 | 40.2억 | 2014 | 46.1억 |
| 1969 | 4.09억 | 1992 | 41.4억 | 2015 | 45.2억 |
| 1970 | 4.36억 | 1993 | 36.1억 | 2016 | 45.7억 |
| 1971 | 5.11억 | 1994 | 39억 | 2017 | 46.3억 |
| 1972 | 6.01억 | 1995 | 46.5억 | 2018 | 47.4억 |
| 1973 | 7.65억 | 1996 | 42.4억 | 2019 | 50.2억 |
| 1974 | 8.88억 | 1997 | 35억 | 2020 | 57.3억 |
| 1975 | 10.3억 | 1998 | 34.9억 | 2021 | 54.9억 |
| 1976 | 12.3억 | 1999 | 31.5억 | 2022 | 56.5억 |
| 1977 | 12.3억 | 2000 | 28억 | 2023 | 63.1억 |
| 1978 | 16.7억 | 2001 | 27.6억 | 2024 | 65.4억 |
| 1979 | 19.5억 | 2002 | 28.8억 | 2025 | 75.9억 |
데이터 표
| 1957 | 2.8% | 1980 | 1.7% | 2003 | 0.9% |
| 1958 | 3% | 1981 | 1.7% | 2004 | 0.9% |
| 1959 | 2.7% | 1982 | 1.7% | 2005 | 0.8% |
| 1960 | 2.3% | 1983 | 1.7% | 2006 | 0.8% |
| 1961 | 2.5% | 1984 | 1.7% | 2007 | 0.7% |
| 1962 | 2.6% | 1985 | 1.8% | 2008 | 0.7% |
| 1963 | 2.5% | 1986 | 1.7% | 2009 | 0.7% |
| 1964 | 2.5% | 1987 | 1.6% | 2010 | 0.7% |
| 1965 | 2.5% | 1988 | 1.6% | 2011 | 0.7% |
| 1966 | 2.5% | 1989 | 1.5% | 2012 | 0.7% |
| 1967 | 2.4% | 1990 | 1.6% | 2013 | 0.7% |
| 1968 | 2.2% | 1991 | 1.5% | 2014 | 0.6% |
| 1969 | 2.2% | 1992 | 1.5% | 2015 | 0.7% |
| 1970 | 2.1% | 1993 | 1.4% | 2016 | 0.7% |
| 1971 | 2.1% | 1994 | 1.3% | 2017 | 0.7% |
| 1972 | 2% | 1995 | 1.4% | 2018 | 0.7% |
| 1973 | 1.9% | 1996 | 1.3% | 2019 | 0.7% |
| 1974 | 1.9% | 1997 | 1.2% | 2020 | 0.8% |
| 1975 | 1.9% | 1998 | 1.2% | 2021 | 0.7% |
| 1976 | 2.2% | 1999 | 1.1% | 2022 | 0.7% |
| 1977 | 2% | 2000 | 1% | 2023 | 0.7% |
| 1978 | 2% | 2001 | 1% | 2024 | 0.7% |
| 1979 | 2% | 2002 | 1% | 2025 | 0.8% |