Year	Measure
1960	320.17283
1961	350.1948
1962	379.14228
1963	409.83992
1964	459.52764
1965	486.85378
1966	543.0529
1967	572.42533
1968	614.59942
1969	681.11452
1970	763.90216
1971	835.28503
1972	911.54207
1973	994.77592
1974	1080.94648
1975	1075.82694
1976	1136.94057
1977	1248.9854
1978	1343.656
1979	1466.47463
1980	1558.52076
1981	1567.29597
1982	1644.71112
1983	1740.03162
1984	1774.26854
1985	1873.17687
1986	1974.53655
1987	2057.72046
1988	2201.7823
1989	2399.30035
1990	2541.86576
1991	2676.64367
1992	2815.87711
1993	2803.20231
1994	2870.83303
1995	3076.84605
1996	3195.86405
1997	3352.46583
1998	3545.01035
1999	3795.22928
2000	3988.96082
2001	4119.67049
2002	4271.16853
2003	4375.73222
2004	4533.53969
2005	4682.99101
2006	4827.46718
2007	4890.56019
2008	4850.83741
2009	4843.84969
2010	4959.09431
2011	4848.27934
2012	4736.35177
2013	4685.05479
2014	4662.6008