Year	Measure
1971	126.51329
1972	126.99016
1973	143.48294
1974	148.40219
1975	155.71182
1976	162.40367
1977	181.33908
1978	181.6024
1979	205.79449
1980	210.69596
1981	224.36433
1982	221.19045
1983	231.43618
1984	238.27363
1985	282.63176
1986	279.35507
1987	326.30206
1988	337.86955
1989	331.52359
1990	367.88685
1991	351.57201
1992	328.32581
1993	341.55707
1994	304.36055
1995	353.82413
1996	401.85083
1997	415.16819
1998	445.25007
1999	447.52259
2000	492.16136
2001	499.77133
2002	521.62583
2003	545.79154
2004	544.82463
2005	580.05569
2006	591.13645
2007	643.23015
2008	665.08668
2009	633.35242
2010	627.10668
2011	674.24206
2012	646.74688
2013	653.63138
2014	630.13553