Year	Measure
1971	85.59864
1972	86.87936
1973	92.48558
1974	93.89426
1975	94.34059
1976	98.01764
1977	97.75963
1978	98.34928
1979	99.39656
1980	103.13345
1981	102.41451
1982	105.31236
1983	104.99615
1984	103.71276
1985	106.76992
1986	111.28473
1987	106.65543
1988	114.15627
1989	116.79982
1990	119.95458
1991	115.47732
1992	119.15375
1993	123.06895
1994	125.78749
1995	133.94461
1996	131.89067
1997	134.90376
1998	137.74943
1999	136.78418
2000	138.78835
2001	148.95871
2002	149.73311
2003	155.03279
2004	155.34495
2005	158.91854
2006	168.00138
2007	173.40694
2008	179.96791
2009	187.26004
2010	200.54582
2011	205.66702
2012	213.30355
2013	215.28296
2014	222.22096