Chad [Chad]
- min:
- 4.512
- max:
- 4.695
- avg:
- 4.635
- σ:
- 0.045
| Period | Value |
|---|
| 1980 | 4.64144229888916 |
| 1981 | 4.662942409515381 |
| 1982 | 4.672369956970215 |
| 1983 | 4.671154499053955 |
| 1984 | 4.685977458953857 |
| 1985 | 4.691434383392334 |
| 1986 | 4.68198299407959 |
| 1987 | 4.687753677368164 |
| 1988 | 4.684558391571045 |
| 1989 | 4.693331718444824 |
| 1990 | 4.694962024688721 |
| 1991 | 4.683564186096191 |
| 1992 | 4.672601222991943 |
| 1993 | 4.6489644050598145 |
| 1994 | 4.626025676727295 |
| 1995 | 4.643889427185059 |
| 1996 | 4.6373701095581055 |
| 1997 | 4.623836040496826 |
| 1998 | 4.625809192657471 |
| 1999 | 4.589468002319336 |
| 2000 | 4.572312831878662 |
| 2001 | 4.558530807495117 |
| 2002 | 4.511544704437256 |
| 2003 | 4.528707981109619 |
| 2004 | 4.582930564880371 |
| 2005 | 4.603962421417236 |
| 2006 | 4.6266984939575195 |
| 2007 | 4.654824733734131 |
| 2008 | 4.662288665771484 |
| 2009 | 4.601078510284424 |
| 2010 | 4.625231742858887 |
| 2011 | 4.641805171966553 |
| 2012 | 4.6392717361450195 |
| 2013 | 4.628349781036377 |
| 2014 | 4.620183944702148 |
| 2015 | 4.595834255218506 |