Year	Measure
1971	151.98935
1972	163.91193
1973	175.93374
1974	174.23335
1975	199.03972
1976	204.03036
1977	220.65705
1978	246.55577
1979	267.37427
1980	281.62469
1981	285.81778
1982	299.19792
1983	317.02026
1984	336.41164
1985	362.81207
1986	391.35162
1987	426.55449
1988	461.79752
1989	487.37317
1990	510.61985
1991	548.95375
1992	604.69368
1993	662.63705
1994	727.10736
1995	770.28024
1996	821.08086
1997	852.74069
1998	870.61722
1999	913.96345
2000	992.94338
2001	1076.54912
2002	1194.85629
2003	1379.48463
2004	1585.83878
2005	1782.31215
2006	2039.01466
2007	2325.92677
2008	2446.36905
2009	2612.45662
2010	2943.58995
2011	3298.00391
2012	3474.98806
2013	3773.40538
2014	3927.0445