데이터 표
| 1968 | 27.1만 | 1988 | 469만 | 2008 | 1,558만 |
| 1969 | 33.7만 | 1989 | 633만 | 2009 | 1,532만 |
| 1970 | 41.4만 | 1990 | 918만 | 2010 | 1,487만 |
| 1971 | 47.4만 | 1991 | 1,050만 | 2011 | 1,751만 |
| 1972 | 54.3만 | 1992 | 1,143만 | 2012 | 1,666만 |
| 1973 | 64.3만 | 1993 | 1,078만 | 2013 | 2,320만 |
| 1974 | 78.9만 | 1994 | 1,185만 | 2014 | 1,974만 |
| 1975 | 109만 | 1995 | 1,345만 | 2015 | 1,709만 |
| 1976 | 132만 | 1996 | 1,297만 | 2016 | 2,200만 |
| 1977 | 142만 | 1997 | 980만 | 2017 | 2,268만 |
| 1978 | 175만 | 1998 | 846만 | 2018 | 2,304만 |
| 1979 | 248만 | 1999 | 904만 | 2019 | 2,148만 |
| 1980 | 554만 | 2000 | 936만 | 2020 | 1,843만 |
| 1981 | 533만 | 2001 | 898만 | 2021 | 1,967만 |
| 1982 | 283만 | 2002 | 950만 | 2022 | 1,790만 |
| 1983 | 293만 | 2003 | 1,088만 | 2023 | 2,368만 |
| 1984 | 262만 | 2004 | 1,094만 | 2024 | 1,901만 |
| 1985 | 236만 | 2005 | 1,089만 | 2025 | 2,384만 |
| 1986 | 290만 | 2006 | 1,081만 | | |
| 1987 | 365만 | 2007 | 1,163만 | | |
데이터 표
| 1968 | 0.2% | 1988 | 0.2% | 2008 | 0.2% |
| 1969 | 0.2% | 1989 | 0.3% | 2009 | 0.2% |
| 1970 | 0.2% | 1990 | 0.3% | 2010 | 0.1% |
| 1971 | 0.2% | 1991 | 0.4% | 2011 | 0.2% |
| 1972 | 0.2% | 1992 | 0.4% | 2012 | 0.1% |
| 1973 | 0.2% | 1993 | 0.3% | 2013 | 0.2% |
| 1974 | 0.1% | 1994 | 0.3% | 2014 | 0.2% |
| 1975 | 0.2% | 1995 | 0.3% | 2015 | 0.1% |
| 1976 | 0.2% | 1996 | 0.3% | 2016 | 0.2% |
| 1977 | 0.2% | 1997 | 0.2% | 2017 | 0.2% |
| 1978 | 0.2% | 1998 | 0.2% | 2018 | 0.2% |
| 1979 | 0.2% | 1999 | 0.2% | 2019 | 0.1% |
| 1980 | 0.5% | 2000 | 0.2% | 2020 | 0.2% |
| 1981 | 0.5% | 2001 | 0.2% | 2021 | 0.2% |
| 1982 | 0.3% | 2002 | 0.2% | 2022 | 0.1% |
| 1983 | 0.3% | 2003 | 0.2% | 2023 | 0.2% |
| 1984 | 0.3% | 2004 | 0.2% | 2024 | 0.1% |
| 1985 | 0.2% | 2005 | 0.2% | 2025 | 0.1% |
| 1986 | 0.2% | 2006 | 0.2% | | |
| 1987 | 0.2% | 2007 | 0.1% | | |