Year	Measure
1971	113.37792
1972	112.05423
1973	119.67791
1974	177.02162
1975	270.82436
1976	407.21384
1977	761.66078
1978	537.90085
1979	772.21934
1980	996.95681
1981	802.92433
1982	1151.77841
1983	1004.65433
1984	1571.03426
1985	1408.4931
1986	1273.04515
1987	1413.00134
1988	1315.75588
1989	1472.53727
1990	2328.29772
1991	3083.71973
1992	2751.75177
1993	2863.3828
1994	2811.08373
1995	2767.63147
1996	2803.86298
1997	2998.06114
1998	3016.57552
1999	3122.25101
2000	3337.2822
2001	3345.71139
2002	3458.45387
2003	3606.03374
2004	3602.62456
2005	3944.38031
2006	5973.86015
2007	6646.33715
2008	5673.57034
2009	5486.31294
2010	6154.42419
2011	6800.14104
2012	6832.83275
2013	6583.46358
2014	6141.7732