Year	Measure
1971	505.75194
1972	514.99673
1973	547.40318
1974	571.74307
1975	623.19607
1976	671.18798
1977	721.56003
1978	788.55843
1979	863.63399
1980	841.266
1981	964.46728
1982	1008.29943
1983	1052.80236
1984	1117.99282
1985	1004.2657
1986	1075.22683
1987	1093.13275
1988	1149.37568
1989	1187.23972
1990	1214.03342
1991	1049.83455
1992	904.74905
1993	839.80791
1994	897.46313
1995	917.83977
1996	972.53794
1997	1037.9533
1998	1043.01327
1999	1078.03742
2000	1135.44075
2001	1155.58499
2002	1183.18794
2003	1191.74185
2004	1173.61048
2005	1152.75686
2006	1223.41669
2007	1296.39117
2008	1314.88271
2009	1323.92675
2010	1290.82627
2011	1318.66669
2012	1364.06614
2013	1419.27471
2014	1434.0327