| 年份 | 斯威士兰 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.148456 |
| 2020 | 0.149917 |
| 2019 | 0.151332 |
| 2018 | 0.15253 |
| 2017 | 0.153727 |
| 2016 | 0.15492 |
| 2015 | 0.156093 |
| 2014 | 0.157212 |
| 2013 | 0.158273 |
| 2012 | 0.159252 |
| 2011 | 0.160127 |
| 2010 | 0.160921 |
| 2009 | 0.161661 |
| 2008 | 0.162405 |
| 2007 | 0.163283 |
| 2006 | 0.164233 |
| 2005 | 0.166062 |
| 2004 | 0.167016 |
| 2003 | 0.168115 |
| 2002 | 0.169393 |
| 2001 | 0.170924 |
| 2000 | 0.172732 |
| 1999 | 0.174789 |
| 1998 | 0.177087 |
| 1997 | 0.179665 |
| 1996 | 0.182829 |
| 1995 | 0.186666 |
| 1994 | 0.186634 |
| 1993 | 0.18669 |
| 1992 | 0.193479 |
| 1991 | 0.205685 |
| 1990 | 0.21077 |
| 1989 | 0.232459 |
| 1988 | 0.2228 |
| 1987 | 0.216168 |
| 1986 | 0.210916 |
| 1985 | 0.219248 |
| 1984 | 0.249519 |
| 1983 | 0.202897 |
| 1982 | 0.209634 |
| 1981 | 0.217458 |
| 1980 | 0.305732 |
| 1979 | 0.317739 |
| 1978 | 0.335573 |
| 1977 | 0.274741 |
| 1976 | 0.3064 |
| 1975 | 0.32775 |
| 1974 | 0.313369 |
| 1973 | 0.349514 |
| 1972 | 0.359349 |
| 1971 | 0.327535 |
| 1970 | 0.336446 |
| 1969 | 0.345414 |
| 1968 | 0.363962 |
| 1967 | 0.3735 |
| 1966 | 0.373564 |
| 1965 | 0.36053 |
| 1964 | 0.348716 |
| 1963 | 0.349095 |
| 1962 | 0.371119 |
| 1961 | 0.351304 |
| 1960 | - |