데이터 표
| 1950 | 26억 | 1976 | 120억 | 2002 | 442억 |
| 1951 | 33.6억 | 1977 | 130억 | 2003 | 523억 |
| 1952 | 45.6억 | 1978 | 159억 | 2004 | 603억 |
| 1953 | 51.7억 | 1979 | 205억 | 2005 | 617억 |
| 1954 | 50억 | 1980 | 284억 | 2006 | 642억 |
| 1955 | 49.1억 | 1981 | 269억 | 2007 | 734억 |
| 1956 | 50.2억 | 1982 | 277억 | 2008 | 729억 |
| 1957 | 49.6억 | 1983 | 264억 | 2009 | 640억 |
| 1958 | 49.7억 | 1984 | 254억 | 2010 | 640억 |
| 1959 | 49.8억 | 1985 | 260억 | 2011 | 666억 |
| 1960 | 51.3억 | 1986 | 304억 | 2012 | 655억 |
| 1961 | 53.1억 | 1987 | 349억 | 2013 | 638억 |
| 1962 | 56억 | 1988 | 384억 | 2014 | 670억 |
| 1963 | 58.1억 | 1989 | 375억 | 2015 | 600억 |
| 1964 | 61.6억 | 1990 | 435억 | 2016 | 533억 |
| 1965 | 64.8억 | 1991 | 470억 | 2017 | 521억 |
| 1966 | 66.9억 | 1992 | 456억 | 2018 | 558억 |
| 1967 | 69.3억 | 1993 | 381억 | 2019 | 566억 |
| 1968 | 62.2억 | 1994 | 386억 | 2020 | 583억 |
| 1969 | 62억 | 1995 | 383억 | 2021 | 651억 |
| 1970 | 67.9억 | 1996 | 386억 | 2022 | 640억 |
| 1971 | 75.2억 | 1997 | 399억 | 2023 | 736억 |
| 1972 | 87.9억 | 1998 | 412억 | 2024 | 898억 |
| 1973 | 94.5억 | 1999 | 408억 | 2025 | 890억 |
| 1974 | 105억 | 2000 | 393억 | | |
| 1975 | 129억 | 2001 | 395억 | | |
데이터 표
| 1950 | 7.2% | 1976 | 5.2% | 2002 | 2.5% |
| 1951 | 8.3% | 1977 | 4.9% | 2003 | 2.5% |
| 1952 | 10.4% | 1978 | 4.7% | 2004 | 2.5% |
| 1953 | 11% | 1979 | 4.7% | 2005 | 2.4% |
| 1954 | 10.1% | 1980 | 5% | 2006 | 2.4% |
| 1955 | 9.1% | 1981 | 5% | 2007 | 2.4% |
| 1956 | 8.6% | 1982 | 5.4% | 2008 | 2.5% |
| 1957 | 8% | 1983 | 5.4% | 2009 | 2.6% |
| 1958 | 7.6% | 1984 | 5.5% | 2010 | 2.6% |
| 1959 | 7.3% | 1985 | 5.3% | 2011 | 2.5% |
| 1960 | 7.1% | 1986 | 5.1% | 2012 | 2.4% |
| 1961 | 6.9% | 1987 | 4.7% | 2013 | 2.3% |
| 1962 | 6.9% | 1988 | 4.2% | 2014 | 2.2% |
| 1963 | 6.8% | 1989 | 4% | 2015 | 2% |
| 1964 | 6.6% | 1990 | 4% | 2016 | 2% |
| 1965 | 6.4% | 1991 | 4.1% | 2017 | 1.9% |
| 1966 | 6.2% | 1992 | 3.9% | 2018 | 1.9% |
| 1967 | 6.2% | 1993 | 3.6% | 2019 | 2% |
| 1968 | 5.9% | 1994 | 3.4% | 2020 | 2.1% |
| 1969 | 5.5% | 1995 | 2.8% | 2021 | 2% |
| 1970 | 5.2% | 1996 | 2.7% | 2022 | 2% |
| 1971 | 5.1% | 1997 | 2.5% | 2023 | 2.2% |
| 1972 | 5.2% | 1998 | 2.5% | 2024 | 2.4% |
| 1973 | 4.9% | 1999 | 2.4% | 2025 | 2.4% |
| 1974 | 5.1% | 2000 | 2.4% | | |
| 1975 | 5.3% | 2001 | 2.4% | | |