Year	Measure
1971	81.64524
1972	88.95773
1973	104.54712
1974	112.72165
1975	116.4473
1976	130.34752
1977	157.39045
1978	187.53139
1979	214.57549
1980	241.776
1981	265.01961
1982	261.6791
1983	266.89419
1984	292.62124
1985	294.13158
1986	335.91308
1987	385.28495
1988	432.11241
1989	447.62179
1990	505.48895
1991	525.74241
1992	559.69947
1993	627.93077
1994	702.8256
1995	785.9941
1996	796.80637
1997	833.87814
1998	840.97844
1999	859.73719
2000	887.47242
2001	873.92798
2002	884.79655
2003	839.52246
2004	828.2285
2005	863.77451
2006	920.82064
2007	984.05021
2008	1033.55037
2009	1092.88155
2010	1178.60628
2011	1282.53548
2012	1368.03581
2013	1472.99458
2014	1563.50533