Chad [Chad]
- min:
- 4.307
- max:
- 4.773
- avg:
- 4.635
- σ:
- 0.107
| Period | Value |
|---|
| 1980 | 4.523192882537842 |
| 1981 | 4.479626655578613 |
| 1982 | 4.553656101226807 |
| 1983 | 4.6009321212768555 |
| 1984 | 4.634687900543213 |
| 1985 | 4.6831746101379395 |
| 1986 | 4.704045295715332 |
| 1987 | 4.698959827423096 |
| 1988 | 4.744661331176758 |
| 1989 | 4.697943687438965 |
| 1990 | 4.715268611907959 |
| 1991 | 4.727109909057617 |
| 1992 | 4.688416957855225 |
| 1993 | 4.651210784912109 |
| 1994 | 4.59788703918457 |
| 1995 | 4.660604476928711 |
| 1996 | 4.616982936859131 |
| 1997 | 4.620838642120361 |
| 1998 | 4.62089729309082 |
| 1999 | 4.55601692199707 |
| 2000 | 4.494862079620361 |
| 2001 | 4.462830066680908 |
| 2002 | 4.3065385818481445 |
| 2003 | 4.40778112411499 |
| 2004 | 4.587074279785156 |
| 2005 | 4.711088180541992 |
| 2006 | 4.7135467529296875 |
| 2007 | 4.7119293212890625 |
| 2008 | 4.766591548919678 |
| 2009 | 4.592100143432617 |
| 2010 | 4.717452526092529 |
| 2011 | 4.73361349105835 |
| 2012 | 4.761286735534668 |
| 2013 | 4.77349328994751 |
| 2014 | 4.753744125366211 |
| 2015 | 4.602941989898682 |