Year	Measure
1971	2058.88039
1972	2131.63974
1973	2295.81102
1974	2285.59021
1975	2432.73088
1976	2594.39252
1977	2735.43912
1978	2921.29955
1979	2882.33415
1980	2932.52729
1981	2888.79709
1982	2876.73333
1983	2890.31998
1984	2856.93964
1985	2853.79483
1986	2917.17592
1987	3027.56522
1988	3033.68468
1989	2987.05906
1990	2683.1789
1991	2231.80614
1992	2052.96293
1993	2003.71568
1994	1892.68151
1995	2053.94209
1996	2109.77243
1997	1989.99418
1998	1823.45918
1999	1613.78233
2000	1614.20977
2001	1663.73929
2002	1755.13003
2003	1832.27861
2004	1803.46324
2005	1810.32726
2006	1884.54512
2007	1904.09689
2008	1928.96636
2009	1712.5261
2010	1730.08768
2011	1777.10615
2012	1741.72261
2013	1595.98939
2014	1591.66766