Year	Measure
1971	604.73251
1972	650.72869
1973	674.9366
1974	717.64487
1975	729.94893
1976	765.5135
1977	797.20074
1978	849.45683
1979	858.29568
1980	931.64972
1981	963.68202
1982	934.48751
1983	919.71598
1984	991.43501
1985	1009.80393
1986	1080.69087
1987	1149.98515
1988	1148.89948
1989	1083.81874
1990	1080.1051
1991	1131.10737
1992	1417.97336
1993	1345.40396
1994	1279.74218
1995	1293.96062
1996	1262.25696
1997	1373.16797
1998	1326.123
1999	1449.05206
2000	1521.1022
2001	1499.70051
2002	1572.89666
2003	1658.76105
2004	1694.75414
2005	1736.41151
2006	1838.33342
2007	1900.68862
2008	1903.37166
2009	1858.40268
2010	1901.31301
2011	1898.71739
2012	1956.97491
2013	1954.57208
2014	1957.93025