Year	Measure
1971	870.62373
1972	920.47157
1973	956.27767
1974	986.17614
1975	1004.1825
1976	1024.20381
1977	1073.01115
1978	1084.73059
1979	1207.78627
1980	1234.36769
1981	1188.99791
1982	1200.35234
1983	1250.93627
1984	1292.80853
1985	1281.5584
1986	1323.54659
1987	1407.43581
1988	1446.52468
1989	1315.63283
1990	1299.55207
1991	1342.92674
1992	1405.10438
1993	1490.7251
1994	1569.67473
1995	1641.04316
1996	1719.66535
1997	1838.89761
1998	1957.58519
1999	2023.7356
2000	2078.28644
2001	2109.49604
2002	2003.4379
2003	2167.71982
2004	2279.29182
2005	2392.89391
2006	2357.95292
2007	2438.08991
2008	2752.09077
2009	2708.93643
2010	2847.25684
2011	2901.27352
2012	2974.69597
2013	2943.86979
2014	3052.38194