Year	Measure
1971	186.12968
1972	213.66023
1973	259.35727
1974	298.41557
1975	383.24437
1976	488.12089
1977	646.7543
1978	621.82252
1979	725.19476
1980	721.37901
1981	789.2058
1982	860.65814
1983	918.66335
1984	973.90986
1985	1026.40091
1986	1029.27574
1987	1006.99881
1988	995.05468
1989	832.05449
1990	916.81264
1991	904.70169
1992	883.86704
1993	865.72616
1994	765.116
1995	770.62102
1996	848.299
1997	856.14939
1998	917.84321
1999	901.91901
2000	878.06083
2001	896.80486
2002	921.65614
2003	930.62058
2004	908.9543
2005	907.97263
2006	935.74116
2007	958.90862
2008	970.44346
2009	932.09155
2010	948.04934
2011	959.87216
2012	984.73546
2013	1079.64085
2014	1172.88732