Year	Measure
1971	178.62384
1972	191.19309
1973	370.25533
1974	426.90099
1975	539.85821
1976	647.98439
1977	775.74375
1978	885.84009
1979	1051.10909
1980	1120.06153
1981	1085.19643
1982	1055.03477
1983	1030.24078
1984	1011.28589
1985	998.50766
1986	1048.9184
1987	1429.30037
1988	1534.44517
1989	1497.14224
1990	1576.86152
1991	1657.6836
1992	1752.95485
1993	1808.51258
1994	1820.39022
1995	1770.53095
1996	1787.76954
1997	1803.11021
1998	2097.58364
1999	2177.40711
2000	2222.65748
2001	2256.75049
2002	2773.94091
2003	2950.16767
2004	3109.15851
2005	3431.39489
2006	3795.84234
2007	3795.58224
2008	3159.38437
2009	3148.968
2010	3377.29408
2011	2863.80837
2012	2272.89668
2013	2367.18383
2014	1857.15658