Year	Measure
1971	64.05382
1972	61.39932
1973	55.57135
1974	71.71282
1975	74.26012
1976	69.79231
1977	106.01271
1978	119.93158
1979	76.43275
1980	62.84826
1981	67.21102
1982	74.09781
1983	67.07999
1984	76.42735
1985	77.4671
1986	76.69396
1987	80.88472
1988	80.96198
1989	85.99238
1990	90.57445
1991	84.48663
1992	93.62431
1993	69.37396
1994	77.33614
1995	99.67188
1996	102.99579
1997	104.53075
1998	105.36388
1999	112.108
2000	94.35923
2001	98.0091
2002	95.2114
2003	101.82882
2004	106.0601
2005	108.03643
2006	107.06103
2007	101.04404
2008	103.54124
2009	122.5817
2010	122.55972
2011	133.09814
2012	142.57636
2013	142.55394
2014	152.72001