Year	Measure
1971	1036.21417
1972	1145.8171
1973	1124.57663
1974	1155.40498
1975	1133.97068
1976	1263.57909
1977	1398.39829
1978	1477.06704
1979	1734.93877
1980	1875.04377
1981	2073.36407
1982	2405.83039
1983	2551.2086
1984	2601.03228
1985	2581.71297
1986	2779.44109
1987	2912.36874
1988	2620.14967
1989	2518.07809
1990	2682.70726
1991	2648.16771
1992	2846.0905
1993	2814.19182
1994	2888.06528
1995	3101.19275
1996	3251.0466
1997	3638.51832
1998	3763.04313
1999	3810.16386
2000	3990.58663
2001	4099.40427
2002	4081.89777
2003	4770.05604
2004	4697.27671
2005	5142.12751
2006	5307.16483
2007	5668.85111
2008	5707.13076
2009	5714.20789
2010	6189.29297
2011	6389.77875
2012	6628.71165
2013	6876.33136
2014	7134.03465