Year	Measure
1960	1353.39944
1961	1421.03353
1962	1528.50037
1963	1647.50593
1964	1778.74054
1965	1914.15315
1966	2088.18849
1967	2243.65368
1968	2487.25011
1969	2710.90568
1970	2948.33941
1971	3146.46326
1972	3414.68901
1973	3612.3102
1974	3735.23742
1975	3773.14035
1976	4009.7903
1977	4077.45711
1978	4251.1315
1979	4403.10665
1980	4364.16062
1981	4292.70072
1982	4237.7778
1983	4300.2505
1984	4412.16507
1985	4517.08959
1986	4566.68477
1987	4722.93387
1988	4924.15563
1989	5052.62778
1990	5218.20204
1991	5327.47685
1992	5441.65547
1993	5494.11237
1994	5643.10695
1995	5719.06111
1996	5905.9922
1997	6066.24324
1998	6257.89088
1999	6349.31958
2000	6507.10592
2001	6599.26537
2002	6641.74076
2003	6695.71512
2004	6882.97022
2005	6912.37209
2006	7025.83448
2007	7157.37858
2008	7173.0463
2009	6856.2819
2010	7006.27382
2011	7060.05377
2012	6876.58975
2013	6833.91143
2014	6712.77476