Year	Measure
1990	2260.76694
1991	2294.82412
1992	2110.49555
1993	2146.18312
1994	2082.15288
1995	1876.0406
1996	1903.22217
1997	1899.61377
1998	2077.57424
1999	2110.54877
2000	2063.58538
2001	2050.21917
2002	2109.31946
2003	2015.76731
2004	1964.1321
2005	1799.40318
2006	1815.94979
2007	1777.91477
2008	1823.31182
2009	1591.99108
2010	1512.82151
2011	1613.8101
2012	1625.98814
2013	1419.47777