| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 143.1 | 75 |
| 2015 | 142.3 | 75 |
| 2014 | 141.6 | 71 |
| 2013 | 140.9 | 71 |
| 2012 | 140.2 | 71 |
| 2011 | 139.5 | 70 |
| 2010 | 138.9 | 70 |
| 2009 | 138.2 | 69 |
| 2008 | 137.5 | 69 |
| 2007 | 136.8 | 68 |
| 2006 | 136.1 | 67 |
| 2005 | 135.3 | 67 |
| 2004 | 134.5 | 66 |
| 2003 | 133.7 | 65 |
| 2002 | 132.9 | 64 |
| 2001 | 132 | 65 |
| 2000 | 131.1 | 65 |
| 1999 | 130 | 63 |
| 1998 | 128.9 | 62 |
| 1997 | 127.7 | 61 |
| 1996 | 126.4 | 62 |
| 1995 | 125.1 | 63 |
| 1994 | 123.7 | 63 |
| 1993 | 122.3 | 62 |
| 1992 | 120.9 | 65 |
| 1991 | 119.5 | 65 |
| 1990 | 117.8 | 63 |
| 1989 | 116.1 | 64 |
| 1988 | 114.4 | 63 |
| 1987 | 112.5 | 62 |
| 1986 | 110.7 | 61 |
| 1985 | 109.1 | |
| 1984 | 107.6 | |
| 1983 | 106.2 | |
| 1982 | 104.7 | |
| 1981 | 103.2 | |
| 1980 | 101.9 | |
| 1979 | 100.6 | |
| 1978 | 99.3 | |
| 1977 | 97.9 | |
| 1976 | 96.6 | |
| 1975 | 95.1 | |
| 1974 | 93.5 | |
| 1973 | 91.5 | |
| 1972 | 89.5 | |
| 1971 | 87.3 | |
| 1970 | 84.9 | |
| 1969 | 82.6 | |
| 1968 | 80.4 | |
| 1967 | 78.3 | |
| 1966 | 76.3 | |
| 1965 | 74.2 | |
| 1964 | 72.5 | |
| 1963 | 70.8 | |
| 1962 | 69.1 | |
| 1961 | 68.5 | |
| 1960 | 69.2 |