Year	Measure
1960	7681.14052
1961	8404.62075
1962	9390.97831
1963	9658.7052
1964	10553.44407
1965	11416.35296
1966	11655.97126
1967	12256.97502
1968	13494.8746
1969	13230.21737
1970	13454.12503
1971	14084.40961
1972	14488.41649
1973	15541.79001
1974	16286.77491
1975	16313.92407
1976	16913.42006
1977	16515.36343
1978	17314.78112
1979	18862.29081
1980	18725.67689
1981	19431.16841
1982	19357.74561
1983	20497.37043
1984	21939.81352
1985	22559.09429
1986	22177.62158
1987	22800.13518
1988	22979.99187
1989	22859.30047
1990	23353.91502
1991	23808.62992
1992	23787.32181
1993	23967.11867
1994	24247.26394
1995	24528.44386
1996	23998.84419
1997	24326.03424
1998	25424.10364
1999	25057.1896
2000	24993.7263
2001	25590.68943
2002	24620.33613
2003	23201.39413
2004	24214.10698
2005	25083.21453
2006	24099.93226
2007	24855.00046
2008	24866.13431
2009	23859.70958
2010	24890.92401
2011	23510.38383
2012	24070.98592
2013	23806.88488
2014	22999.9346