Year	Measure
1971	2292.65398
1972	2486.06609
1973	2683.10968
1974	2842.23122
1975	3035.63619
1976	3247.55135
1977	3437.79769
1978	3648.38703
1979	3772.28941
1980	3973.69079
1981	4125.35343
1982	4397.89056
1983	4582.12534
1984	4772.2946
1985	4678.28582
1986	4646.26094
1987	4838.62032
1988	4940.51849
1989	4963.17889
1990	4758.7319
1991	4361.14452
1992	3735.52545
1993	3807.69691
1994	3825.38662
1995	4211.12513
1996	4350.44326
1997	3970.13114
1998	3932.40178
1999	3613.36727
2000	3673.60687
2001	3859.09002
2002	3853.819
2003	3997.9026
2004	3971.82274
2005	4165.18039
2006	4366.91277
2007	4523.32288
2008	4674.50315
2009	4483.74714
2010	4560.41492
2011	4863.69144
2012	4761.91258
2013	4639.70632
2014	4708.92746