Year	Measure
1971	94.35446
1972	101.26748
1973	111.24299
1974	113.71409
1975	122.26476
1976	135.3463
1977	144.02328
1978	156.60605
1979	192.58209
1980	177.12293
1981	183.05512
1982	180.77339
1983	172.48451
1984	127.92519
1985	146.63649
1986	147.17144
1987	165.61323
1988	169.9016
1989	156.17553
1990	155.93726
1991	144.37442
1992	148.97798
1993	140.50046
1994	142.86109
1995	172.20487
1996	158.05006
1997	168.52275
1998	183.51163
1999	172.94231
2000	171.5752
2001	180.2214
2002	175.27982
2003	173.59231
2004	173.13287
2005	171.84489
2006	182.2515
2007	187.93938
2008	196.73827
2009	201.74188
2010	216.40745
2011	198.17843
2012	236.19654
2013	234.44992
2014	276.14857