| 时间 | 值 （人/平方公里） | 世界排名 |
|---|---|---|
| 2016 | 48193643 | 6 |
| 2015 | 47566382 | 6 |
| 2014 | 46938133 | 6 |
| 2013 | 46252759 | 6 |
| 2012 | 45579101 | 6 |
| 2011 | 44916938 | 6 |
| 2010 | 44266050 | 6 |
| 2009 | 43626220 | 6 |
| 2008 | 42998094 | 6 |
| 2007 | 42378893 | 6 |
| 2006 | 41770992 | 6 |
| 2005 | 41173332 | 6 |
| 2004 | 40586519 | 6 |
| 2003 | 40007958 | 6 |
| 2002 | 39439871 | 6 |
| 2001 | 38881273 | 6 |
| 2000 | 38332732 | 6 |
| 1999 | 37596549 | 6 |
| 1998 | 36762894 | 6 |
| 1997 | 35950324 | 6 |
| 1996 | 35159295 | 6 |
| 1995 | 34385963 | 6 |
| 1994 | 33632983 | 6 |
| 1993 | 32898714 | 6 |
| 1992 | 32183588 | 6 |
| 1991 | 31484154 | 6 |
| 1990 | 30802834 | 6 |
| 1989 | 29946466 | 6 |
| 1988 | 29044255 | 6 |
| 1987 | 28175568 | 6 |
| 1986 | 27342210 | 6 |