Year	2004-2006 = 100
1961	21.51
1962	21.15
1963	21.17
1964	23.25
1965	24.85
1966	24.32
1967	25.25
1968	25.57
1969	25.47
1970	27.74
1971	28.44
1972	28.55
1973	28.62
1974	29.91
1975	28.88
1976	30.76
1977	35.13
1978	35.19
1979	36.7
1980	37.41
1981	40.6
1982	41.17
1983	42.87
1984	45.96
1985	49.87
1986	45.32
1987	48.83
1988	54.74
1989	60.94
1990	63.32
1991	57.86
1992	59.55
1993	65.72
1994	62.93
1995	67.43
1996	70.99
1997	77.25
1998	80.41
1999	78.01
2000	80.11
2001	88.46
2002	87.74
2003	98.58
2004	94.51
2005	98.57
2006	106.92
2007	125.08
2008	129.45
2009	109.94
2010	154.48
2011	163.34
2012	128.98
2013	178.32
2014	181.51
2015	180.96
2016	183.72