Year	Measure
1971	525.58789
1972	575.15615
1973	649.8902
1974	700.84879
1975	646.42872
1976	692.74625
1977	742.4543
1978	811.94227
1979	915.6348
1980	973.78683
1981	1047.88422
1982	1138.55842
1983	1235.62399
1984	1292.35684
1985	1311.7471
1986	1411.88071
1987	1562.77307
1988	1349.02954
1989	840.61713
1990	517.93996
1991	1017.27108
1992	1194.6013
1993	1366.49414
1994	1481.18764
1995	1561.61712
1996	2116.92761
1997	2507.54203
1998	3031.19734
1999	2996.85172
2000	2985.44276
2001	2946.55222
2002	3010.35785
2003	2963.6922
2004	2847.84872
2005	2810.7389
2006	2694.61594
2007	2796.05899
2008	2966.39761
2009	3140.45185
2010	3478.78937
2011	3342.58281
2012	2802.2514
2013	3100.39495
2014	2892.77047