Created with Raphaƫl 2.1.2
1998
19.66
27.02
2014
28.09
2012
30.09
2010
22.8
2008
23.07
2006
24.71
2004
25.25
2002
23.84
2000
19.66
1998
Graph created by Alexa Salari, Cronkite News