Year	Measure
1971	532.02843
1972	568.4032
1973	593.44675
1974	591.03264
1975	739.34509
1976	908.67455
1977	1067.81416
1978	1098.48317
1979	1065.7674
1980	1142.96536
1981	1123.96811
1982	1096.87323
1983	1070.69016
1984	1018.10029
1985	796.35397
1986	1420.61479
1987	1161.95168
1988	1005.93953
1989	1021.3935
1990	552.25218
1991	418.45359
1992	453.64407
1993	536.36383
1994	596.40796
1995	663.784
1996	904.34664
1997	694.6648
1998	734.84991
1999	1414.70378
2000	1449.64741
2001	1351.2308
2002	1578.16592
2003	1469.26454
2004	1797.52549
2005	1722.07285
2006	1218.36015
2007	1213.12437
2008	1617.74416
2009	1835.68407
2010	1943.34335
2011	2205.70392
2012	2118.32778
2013	2533.25283
2014	2309.3665