Year	Measure
1960	1456.69361
1961	1543.71134
1962	1646.83246
1963	1743.2292
1964	1888.496
1965	1980.15847
1966	2088.293
1967	2180.79162
1968	2263.22018
1969	2467.31784
1970	2623.01818
1971	2746.16699
1972	2920.4542
1973	3148.95246
1974	3247.66432
1975	3235.31193
1976	3573.4262
1977	3670.70163
1978	3914.42997
1979	4187.72923
1980	4407.65365
1981	4567.74735
1982	4606.90771
1983	4699.50968
1984	4933.01233
1985	5246.40199
1986	5494.94509
1987	5634.21019
1988	5717.29064
1989	5836.01291
1990	5940.75061
1991	6359.77428
1992	6475.78792
1993	6453.00044
1994	6530.41189
1995	6621.94197
1996	6905.16475
1997	6833.1363
1998	7015.5016
1999	7149.29693
2000	7224.52699
2001	7342.25668
2002	7299.24846
2003	7529.5503
2004	7661.49118
2005	7652.8643
2006	7540.2953
2007	7513.57933
2008	7643.44985
2009	7338.0419
2010	7734.72678
2011	7232.98023
2012	7363.42604
2013	7367.84656
2014	6939.52231