Year	Years
1990	65
1991	65.4
1992	65.7
1993	66.2
1994	66.6
1995	67
1996	67.3
1997	67.7
1998	67.9
1999	68.1
2000	68.3
2001	68.4
2002	68.4
2003	68.6
2004	67.2
2005	69
2006	69.1
2007	69.4
2008	69.5
2009	69.6
2010	69.8
2011	70
2012	70.3
2013	70.5