Year	Measure
1971	1297.80239
1972	1311.96042
1973	1416.44662
1974	1351.3637
1975	1439.39394
1976	1610.00443
1977	1804.87379
1978	1950.72309
1979	2003.16449
1980	2156.58391
1981	2229.61763
1982	2361.47782
1983	2624.83396
1984	2786.45399
1985	2918.33144
1986	3196.79253
1987	3845.35436
1988	4072.07335
1989	3936.724
1990	4177.9297
1991	4401.25174
1992	4507.88725
1993	4698.69514
1994	4835.47072
1995	4849.82375
1996	4915.70197
1997	4968.48659
1998	5325.73315
1999	5268.14501
2000	5446.66167
2001	5549.94564
2002	5647.89965
2003	5713.88245
2004	5782.56063
2005	5878.44185
2006	5882.8076
2007	5907.34931
2008	5883.03774
2009	5950.83754
2010	5973.34928
2011	5959.89592
2012	6031.24432
2013	5941.1609
2014	6083.26994