Year	Measure
1960	1825.93425
1961	1879.1502
1962	2081.01162
1963	2268.42789
1964	2349.08354
1965	2493.1539
1966	2605.56696
1967	2762.80248
1968	3042.80966
1969	3362.78722
1970	3765.56737
1971	3855.22677
1972	4381.04179
1973	4613.27134
1974	4501.41432
1975	4318.72656
1976	4742.98174
1977	4560.27312
1978	4662.60528
1979	4868.63559
1980	4548.82479
1981	4269.41412
1982	3785.11594
1983	3935.95688
1984	4147.70153
1985	4184.42981
1986	4317.31559
1987	4387.67069
1988	4321.10053
1989	4323.85818
1990	4394.54209
1991	4603.73318
1992	4502.54008
1993	4510.58215
1994	4511.79496
1995	4780.4126
1996	5014.98883
1997	4835.74195
1998	4842.44394
1999	4730.22968
2000	4739.06593
2001	4839.46553
2002	4873.26163
2003	5020.38193
2004	5085.8857
2005	4989.46793
2006	4925.11242
2007	4908.89826
2008	4848.01369
2009	4722.10604
2010	5025.32092
2011	4636.7019
2012	4646.25524
2013	4600.18298
2014	4325.52371
2015	4233.04386