Chad [Chad]
- min:
- 4.434
- max:
- 4.918
- avg:
- 4.7
- σ:
- 0.105
| Period | Value |
|---|
| 1973 | 4.917677879333496 |
| 1974 | 4.917515754699707 |
| 1975 | 4.902392864227295 |
| 1976 | 4.861580848693848 |
| 1977 | 4.8269758224487305 |
| 1978 | 4.815133571624756 |
| 1979 | 4.656266212463379 |
| 1980 | 4.62271785736084 |
| 1981 | 4.611557960510254 |
| 1982 | 4.633559703826904 |
| 1983 | 4.694338798522949 |
| 1984 | 4.728777885437012 |
| 1985 | 4.749575138092041 |
| 1986 | 4.773393630981445 |
| 1987 | 4.7825188636779785 |
| 1988 | 4.792649269104004 |
| 1989 | 4.803674697875977 |
| 1990 | 4.785097122192383 |
| 1991 | 4.7909064292907715 |
| 1992 | 4.767863750457764 |
| 1993 | 4.743760585784912 |
| 1994 | 4.723392486572266 |
| 1995 | 4.74653959274292 |
| 1996 | 4.713757514953613 |
| 1997 | 4.705663681030273 |
| 1998 | 4.691603183746338 |
| 1999 | 4.631824970245361 |
| 2000 | 4.570125579833984 |
| 2001 | 4.567071914672852 |
| 2002 | 4.43370246887207 |
| 2003 | 4.481669902801514 |
| 2004 | 4.612545967102051 |
| 2005 | 4.663019180297852 |
| 2006 | 4.657098293304443 |
| 2007 | 4.673828601837158 |
| 2008 | 4.679688453674316 |
| 2009 | 4.587282180786133 |
| 2010 | 4.654887676239014 |
| 2011 | 4.645554542541504 |
| 2012 | 4.657283782958984 |
| 2013 | 4.6609086990356445 |
| 2014 | 4.656710624694824 |
| 2015 | 4.6262969970703125 |
| 2016 | 4.590195178985596 |