Year	Measure
1981	525.81046
1982	561.3962
1983	559.47749
1984	574.13758
1985	597.08321
1986	682.25724
1987	773.54202
1988	662.91909
1989	677.80213
1990	718.47839
1991	798.31669
1992	866.85767
1993	863.05348
1994	901.07019
1995	876.30187
1996	902.70937
1997	967.85914
1998	1034.96294
1999	1017.14139
2000	1098.74215
2001	1169.27408
2002	1220.81875
2003	1309.62086
2004	1428.39182
2005	1419.83305
2006	1455.7609
2007	1503.85444
2008	1518.22564
2009	1716.76898
2010	1539.55648
2011	1477.08399
2012	1714.43751
2013	2060.59928
2014	1748.61533