Year	Measure
1971	201.20802
1972	197.41699
1973	194.24848
1974	214.26322
1975	236.29862
1976	269.37542
1977	303.17007
1978	316.84584
1979	341.01196
1980	375.15469
1981	410.49169
1982	449.78808
1983	494.30023
1984	512.06338
1985	487.74041
1986	578.73143
1987	607.82536
1988	621.73568
1989	643.04952
1990	662.73353
1991	678.62771
1992	682.34587
1993	698.14085
1994	710.65638
1995	729.19168
1996	786.9595
1997	826.12362
1998	869.8381
1999	926.60777
2000	961.94907
2001	1013.25425
2002	1062.52755
2003	1128.72138
2004	1171.16975
2005	1241.34277
2006	1311.36449
2007	1401.19247
2008	1446.62614
2009	1512.45943
2010	1550.81099
2011	1658.96445
2012	1658.77004
2013	1658.59323
2014	1657.76872