Year	Measure
1960	1586.74942
1961	1683.41491
1962	1790.68688
1963	1916.92753
1964	2060.54735
1965	2194.20606
1966	2300.4998
1967	2362.90894
1968	2579.74992
1969	2815.22135
1970	3834.17841
1971	4064.45472
1972	4335.76962
1973	4654.98505
1974	4803.4232
1975	4743.94483
1976	5146.93258
1977	5285.26079
1978	5574.74522
1979	5786.12722
1980	5797.49975
1981	5832.06487
1982	5822.02736
1983	5965.45819
1984	6239.97182
1985	6448.53986
1986	6530.23871
1987	6666.2196
1988	6776.30791
1989	6835.32991
1990	6639.73169
1991	6564.79719
1992	6445.874
1993	6288.41635
1994	6244.95723
1995	6327.70975
1996	6403.33373
1997	6427.79877
1998	6479.49025
1999	6505.133
2000	6635.42141
2001	6762.6534
2002	6900.78053
2003	7009.72649
2004	7108.96252
2005	7138.22149
2006	7212.43745
2007	7229.08991
2008	7187.76401
2009	6817.1584
2010	7264.32259
2011	7281.27217
2012	7270.15252
2013	7217.52909
2014	7035.48297