Year	Measure
1960	2457.2055
1961	2616.85333
1962	2751.81305
1963	3078.83719
1964	3250.56084
1965	3513.1639
1966	3677.64117
1967	3712.41878
1968	3880.49925
1969	4087.92556
1970	4271.53378
1971	4694.00631
1972	5306.65657
1973	5525.95144
1974	5461.52065
1975	5795.4656
1976	6094.84006
1977	6149.92629
1978	6150.51903
1979	6180.44387
1980	6343.60243
1981	6496.8479
1982	6872.40582
1983	7299.40925
1984	7512.62744
1985	7555.66505
1986	7875.11937
1987	7901.29489
1988	8133.03283
1989	8465.38555
1990	8972.31065
1991	8842.37933
1992	8636.63392
1993	8909.35558
1994	8927.90055
1995	9106.82202
1996	9072.88317
1997	9090.52442
1998	9125.03277
1999	9138.74475
2000	9384.34819
2001	9417.34313
2002	9526.65569
2003	9407.03218
2004	9666.29969
2005	9673.67377
2006	9700.09081
2007	9640.60798
2008	9556.3172
2009	9403.84884
2010	9601.90314
2011	9458.4854
2012	9360.94916
2013	9089.61977
2014	9026.32104