Year	Measure
1971	327.56697
1972	308.40764
1973	399.84162
1974	364.38088
1975	402.33518
1976	381.1978
1977	421.29654
1978	409.30694
1979	471.28832
1980	440.8472
1981	442.49344
1982	327.53067
1983	365.25378
1984	443.19737
1985	474.96816
1986	482.75556
1987	476.30142
1988	379.09318
1989	333.38364
1990	388.52132
1991	398.32795
1992	540.26544
1993	508.44351
1994	526.37336
1995	497.05901
1996	633.44482
1997	636.98387
1998	1090.35573
1999	1267.7492
2000	1313.61632
2001	1273.63913
2002	1373.48376
2003	1347.38218
2004	1112.60049
2005	1215.90471
2006	1308.56448
2007	1335.38811
2008	1352.35541
2009	1299.7865
2010	1366.23767
2011	1397.61317
2012	1466.27999
2013	1516.54033
2014	1578.15166