Year	Years
1990	57.1
1991	57.5
1992	57.9
1993	58.2
1994	58.4
1995	58.5
1996	58.6
1997	58.7
1998	58.8
1999	59
2000	59.2
2001	59.4
2002	59.8
2003	60.3
2004	60.9
2005	61.4
2006	62.1
2007	62.7
2008	63.2
2009	63.6
2010	64
2011	64.3
2012	64.6
2013	64.9