Year	Measure
1960	794.81604
1961	890.68835
1962	1007.04835
1963	1119.72317
1964	1221.73081
1965	1316.46285
1966	1431.07449
1967	1551.51917
1968	1698.42756
1969	1832.49992
1970	2026.21747
1971	1949.14872
1972	2050.73788
1973	2175.58755
1974	2212.20669
1975	2106.07875
1976	2264.05719
1977	2204.17981
1978	2247.56552
1979	2340.04204
1980	2318.4273
1981	2265.93109
1982	2206.54273
1983	2203.86419
1984	2253.71892
1985	2284.8113
1986	2311.54807
1987	2407.25635
1988	2462.79678
1989	2566.10892
1990	2583.88808
1991	2645.67324
1992	2627.34001
1993	2611.99044
1994	2578.46598
1995	2799.37576
1996	2796.15474
1997	2834.40295
1998	2912.94737
1999	2957.31149
2000	3012.195
2001	3020.62119
2002	3037.26696
2003	3168.52902
2004	3169.93264
2005	3214.67412
2006	3175.79987
2007	3149.57655
2008	3087.56633
2009	2869.92071
2010	2930.58852
2011	2828.40489
2012	2709.29773
2013	2579.47254
2014	2414.484
2015	2481.75465