Year	Measure
1960	975.02575
1961	1046.41511
1962	1143.60513
1963	1266.35058
1964	1353.31449
1965	1446.73959
1966	1573.20208
1967	1693.25432
1968	1823.39875
1969	1934.81446
1970	2072.91277
1971	2152.77394
1972	2295.49306
1973	2457.72684
1974	2537.28539
1975	2476.36221
1976	2710.45794
1977	2776.81813
1978	2891.04419
1979	3040.95961
1980	3104.85458
1981	3096.93474
1982	3132.77122
1983	3134.39234
1984	3304.32741
1985	3391.66963
1986	3490.34312
1987	3662.66656
1988	3825.91778
1989	4007.17952
1990	4144.90744
1991	4224.74011
1992	4310.53797
1993	4303.64531
1994	4439.31925
1995	4597.8926
1996	4658.70016
1997	4791.28525
1998	4955.72194
1999	5079.49241
2000	5299.85648
2001	5406.49172
2002	5539.70384
2003	5652.51954
2004	5687.99757
2005	5731.10156
2006	5833.4673
2007	5804.32596
2008	5757.96061
2009	5368.39057
2010	5493.71104
2011	5514.80361
2012	5397.74148
2013	5159.18366
2014	5002.40668