Year	Measure
1960	3033.05065
1961	3006.74739
1962	3087.34197
1963	3196.83118
1964	3212.53456
1965	3329.41016
1966	3306.78161
1967	3345.55349
1968	3406.14449
1969	3557.12928
1970	3684.95235
1971	3733.283
1972	3747.96248
1973	3880.65017
1974	3734.84165
1975	3545.81713
1976	3616.97553
1977	3695.38387
1978	3675.43527
1979	3858.97596
1980	3523.64884
1981	3415.37757
1982	3397.12229
1983	3377.90491
1984	3370.52494
1985	3550.78379
1986	3597.94469
1987	3619.07727
1988	3643.00688
1989	3626.29786
1990	3597.05162
1991	3707.95197
1992	3684.72454
1993	3713.18582
1994	3732.52111
1995	3728.96315
1996	3879.82279
1997	3760.71237
1998	3787.10845
1999	3784.07409
2000	3785.75313
2001	3784.92817
2002	3685.86949
2003	3731.60972
2004	3694.4786
2005	3686.3599
2006	3598.81041
2007	3441.64022
2008	3361.98052
2009	3145.58566
2010	3230.61598
2011	2972.14799
2012	3042.85581
2013	2987.70278
2014	2776.8441
2015	2763.98006