Year	Measure
1960	2614.2823
1961	2871.04324
1962	2895.08603
1963	2978.67527
1964	3074.3506
1965	2974.73555
1966	2914.55745
1967	2918.22431
1968	2992.73406
1969	3796.05545
1970	6471.39964
1971	7001.52355
1972	7650.48748
1973	9895.58066
1974	9962.40864
1975	9588.07959
1976	10002.08945
1977	10631.24721
1978	10986.99544
1979	11841.31836
1980	12680.9212
1981	12918.46331
1982	14038.31352
1983	14642.77124
1984	15239.38358
1985	14771.85642
1986	15350.76898
1987	15268.9143
1988	16353.00713
1989	16424.62785
1990	16148.27372
1991	15931.13962
1992	16099.9322
1993	16737.13148
1994	17066.32183
1995	17396.4736
1996	17358.58037
1997	18957.83541
1998	21321.16024
1999	24522.22755
2000	26201.52558
2001	26950.39443
2002	27896.89868
2003	27666.38689
2004	28215.45225
2005	27988.02968
2006	31328.3868
2007	36852.54489
2008	50063.95433
2009	51259.18763
2010	51439.90869
2011	52373.87701
2012	53202.83366
2013	54799.17471
2014	53832.47909