Year	Measure
1990	4628.65805
1991	4411.48049
1992	4274.54716
1993	3479.53394
1994	3411.14821
1995	3789.98649
1996	4132.56121
1997	4291.31781
1998	4302.99911
1999	3979.36396
2000	4198.71571
2001	4434.37024
2002	4480.34435
2003	4332.67906
2004	4258.25157
2005	3921.90646
2006	4040.44002
2007	4159.13723
2008	4291.84316
2009	4224.39767
2010	4358.81217
2011	4489.57085
2012	4386.53455
2013	4444.22297
2014	4271.74467