Year	Measure
1960	494.7956
1961	550.43633
1962	613.24745
1963	663.93685
1964	745.38437
1965	822.95674
1966	925.93069
1967	1033.07697
1968	1154.52678
1969	1293.58961
1970	1415.84102
1971	1534.9827
1972	1703.5083
1973	1873.67742
1974	2024.09527
1975	2054.34324
1976	2256.14102
1977	2294.47389
1978	2399.0301
1979	2528.94962
1980	2644.22298
1981	2671.28329
1982	2658.24167
1983	2792.15986
1984	2903.33794
1985	2975.08323
1986	3004.27963
1987	3094.08226
1988	3217.94816
1989	3442.94871
1990	3536.74997
1991	3607.70014
1992	3690.591
1993	3638.52663
1994	3756.0392
1995	3917.32464
1996	4008.93942
1997	4324.42065
1998	4479.04732
1999	4820.67503
2000	5167.80967
2001	5422.51569
2002	5576.54626
2003	5676.14049
2004	5892.30741
2005	6111.21922
2006	6105.07585
2007	6054.37444
2008	6025.77276
2009	5652.59593
2010	5706.56306
2011	5599.37737
2012	5573.40118
2013	5409.41134
2014	5355.98701