Year	Measure
1960	4548.20524
1961	4630.02414
1962	5094.31021
1963	7016.35298
1964	8692.60107
1965	9107.08899
1966	9541.92186
1967	9495.66411
1968	9209.46851
1969	10260.74074
1970	10649.49539
1971	11871.35135
1972	11661.85805
1973	11796.26195
1974	13108.01296
1975	10642.15072
1976	11487.78453
1977	10443.93648
1978	10806.42087
1979	10982.31805
1980	10784.01758
1981	11089.05469
1982	10992.40818
1983	11137.1854
1984	11737.76906
1985	12064.16039
1986	12159.46573
1987	12275.118
1988	13423.48373
1989	13537.5232
1990	13667.67055
1991	14087.8553
1992	12927.90208
1993	12632.24102
1994	13665.07415
1995	14920.77088
1996	14629.73022
1997	15134.10418
1998	15460.32494
1999	14990.41756
2000	15668.11827
2001	15616.32977
2002	15980.2768
2003	16258.88449
2004	16300.11242
2005	15644.14672
2006	16456.60412
2007	16352.3218
2008	15937.78778
2009	14425.96473
2010	16829.96254
2011	15586.08423
2012	14703.94353
2013	14193.16843
2014	13914.67845