Year	Measure
1990	4787.48169
1991	4643.26572
1992	4313.53505
1993	3953.27948
1994	3475.16145
1995	3348.92838
1996	3060.37216
1997	2958.58579
1998	2839.48575
1999	2792.14106
2000	2778.43709
2001	2790.5344
2002	2844.81095
2003	2997.9744
2004	3151.1477
2005	3246.03573
2006	3399.52231
2007	3528.92483
2008	3534.35715
2009	3227.95543
2010	3549.84772
2011	3662.44331
2012	3640.55684
2013	3600.2295
2014	3418.58502