Year	Measure
1960	5630.62981
1961	5605.11193
1962	5791.12496
1963	5966.04092
1964	6468.92626
1965	6909.89938
1966	7359.08819
1967	7630.16853
1968	8030.41843
1969	8532.9085
1970	8962.20221
1971	9300.71721
1972	9903.77623
1973	10297.94798
1974	10820.67527
1975	10436.94257
1976	11043.83876
1977	11762.48109
1978	12231.86054
1979	12384.14961
1980	12763.71325
1981	13196.82731
1982	12937.26688
1983	13409.72659
1984	14290.40542
1985	14800.05397
1986	15302.58739
1987	15736.76083
1988	16326.41755
1989	16402.57131
1990	16109.27998
1991	16104.46973
1992	16080.34644
1993	16235.99151
1994	16325.65728
1995	16503.27042
1996	16572.68325
1997	16608.55298
1998	16385.40196
1999	16625.3869
2000	16990.57839
2001	16807.14499
2002	16959.60079
2003	17191.15419
2004	17235.41178
2005	16912.47834
2006	16508.67863
2007	16683.69014
2008	16378.14227
2009	15450.87955
2010	15269.5726
2011	15642.96775
2012	15320.59425
2013	15719.70823
2014	15545.53511