| 时间 | 值 （万人） | 世界排名 |
|---|---|---|
| 2016 | 57 | 147 |
| 2015 | 55.7 | 147 |
| 2014 | 54.5 | 148 |
| 2013 | 53.3 | 148 |
| 2012 | 52.1 | 148 |
| 2011 | 50.9 | 149 |
| 2010 | 49.7 | 149 |
| 2009 | 48.6 | 149 |
| 2008 | 47.4 | 149 |
| 2007 | 46.3 | 150 |
| 2006 | 45.2 | 150 |
| 2005 | 44.1 | 150 |
| 2004 | 43.1 | 150 |
| 2003 | 42 | 151 |
| 2002 | 41 | 151 |
| 2001 | 40 | 151 |
| 2000 | 39 | 151 |
| 1999 | 38 | 151 |
| 1998 | 37 | 151 |
| 1997 | 36 | 151 |
| 1996 | 35.1 | 151 |
| 1995 | 34.1 | 151 |
| 1994 | 33.1 | 152 |
| 1993 | 32.2 | 152 |
| 1992 | 31.2 | 153 |
| 1991 | 30.4 | 154 |
| 1990 | 29.7 | 154 |
| 1989 | 29 | 153 |
| 1988 | 28.4 | 154 |
| 1987 | 27.7 | 154 |
| 1986 | 27.1 | 155 |