Chad [Chad]
- min:
- 4.418
- max:
- 4.712
- avg:
- 4.635
- σ:
- 0.068
| Period | Value |
|---|
| 1980 | 4.5947957038879395 |
| 1981 | 4.592410564422607 |
| 1982 | 4.629135608673096 |
| 1983 | 4.646080493927002 |
| 1984 | 4.66962194442749 |
| 1985 | 4.692979335784912 |
| 1986 | 4.694193363189697 |
| 1987 | 4.695937633514404 |
| 1988 | 4.712283611297607 |
| 1989 | 4.69888162612915 |
| 1990 | 4.707751274108887 |
| 1991 | 4.704360485076904 |
| 1992 | 4.681197643280029 |
| 1993 | 4.649646759033203 |
| 1994 | 4.611814498901367 |
| 1995 | 4.649837493896484 |
| 1996 | 4.628083229064941 |
| 1997 | 4.620265960693359 |
| 1998 | 4.622103214263916 |
| 1999 | 4.57107400894165 |
| 2000 | 4.5353169441223145 |
| 2001 | 4.51232385635376 |
| 2002 | 4.417998313903809 |
| 2003 | 4.470750331878662 |
| 2004 | 4.5798258781433105 |
| 2005 | 4.644688129425049 |
| 2006 | 4.662082195281982 |
| 2007 | 4.680975914001465 |
| 2008 | 4.708751678466797 |
| 2009 | 4.595571041107178 |
| 2010 | 4.662717342376709 |
| 2011 | 4.681488990783691 |
| 2012 | 4.690798282623291 |
| 2013 | 4.687961101531982 |
| 2014 | 4.6740875244140625 |
| 2015 | 4.595193862915039 |