| 年份 | 汤加总和生育率 |
|---|---|
| 2021 | 3.24 |
| 2020 | 3.27 |
| 2019 | 3.32 |
| 2018 | 3.35 |
| 2017 | 3.41 |
| 2016 | 3.48 |
| 2015 | 3.56 |
| 2014 | 3.64 |
| 2013 | 3.71 |
| 2012 | 3.78 |
| 2011 | 3.84 |
| 2010 | 3.89 |
| 2009 | 3.96 |
| 2008 | 4.03 |
| 2007 | 4.09 |
| 2006 | 4.14 |
| 2005 | 4.18 |
| 2004 | 4.21 |
| 2003 | 4.19 |
|
|
|
| 2002 | 4.14 |
| 2001 | 4.07 |
| 2000 | 4.11 |
| 1999 | 4.20 |
| 1998 | 4.33 |
| 1997 | 4.37 |
| 1996 | 4.43 |
| 1995 | 4.45 |
| 1994 | 4.50 |
| 1993 | 4.55 |
| 1992 | 4.58 |
| 1991 | 4.61 |
| 1990 | 4.64 |
| 1989 | 4.69 |
| 1988 | 4.76 |
| 1987 | 4.86 |
| 1986 | 4.99 |
| 1985 | 5.13 |
| 1984 | 5.27 |
| 1983 | 5.38 |
|
|
|
| 1982 | 5.48 |
| 1981 | 5.53 |
| 1980 | 5.55 |
| 1979 | 5.54 |
| 1978 | 5.51 |
| 1977 | 5.47 |
| 1976 | 5.44 |
| 1975 | 5.43 |
| 1974 | 5.45 |
| 1973 | 5.51 |
| 1972 | 5.62 |
| 1971 | 5.76 |
| 1970 | 5.94 |
| 1969 | 6.15 |
| 1968 | 6.37 |
| 1967 | 6.59 |
| 1966 | 6.60 |
| 1965 | 6.66 |
| 1964 | 6.73 |
| 1963 | 6.77 |
| 1962 | 6.80 |
| 1961 | 6.84 |
| 1960 | 6.88 |
| 1959 | 7.36 |