Year	Measure
1990	6673.17859
1991	6541.17101
1992	6107.47937
1993	5724.09103
1994	5190.72916
1995	5101.55549
1996	5016.44701
1997	4935.62171
1998	4848.03037
1999	4998.8387
2000	5198.41677
2001	5274.37772
2002	5304.43172
2003	5478.14413
2004	5633.85575
2005	5770.11234
2006	6098.53812
2007	6286.05054
2008	6399.68447
2009	6095.38057
2010	6409.89522
2011	6485.76084
2012	6617.13624
2013	6539.2112
2014	6602.65753