Year	Measure
1960	2698.7923
1961	2742.12347
1962	2887.23625
1963	3080.41407
1964	3273.50896
1965	3437.54077
1966	3636.64386
1967	3630.19414
1968	4000.82328
1969	4303.22392
1970	4681.29984
1971	4450.38251
1972	4527.21372
1973	4773.8114
1974	4510.44301
1975	4764.49901
1976	5151.25137
1977	5054.83376
1978	5016.74042
1979	5229.61827
1980	4871.53324
1981	5097.15446
1982	4877.7999
1983	4941.26701
1984	5216.25782
1985	5656.1929
1986	5878.80147
1987	5763.07044
1988	5854.49966
1989	5594.55297
1990	5514.55753
1991	5650.54138
1992	5369.37036
1993	5334.1665
1994	5660.27142
1995	5702.16504
1996	5825.09791
1997	5672.00818
1998	5769.69506
1999	5661.49146
2000	5360.14515
2001	5680.28049
2002	5802.11011
2003	5650.43805
2004	5847.34416
2005	5711.12728
2006	5529.07795
2007	5472.13539
2008	5379.9591
2009	4883.20049
2010	5427.92505
2011	5274.64361
2012	5269.486
2013	5146.53359
2014	4966.43592
2015	5102.78558