Year	Percent
2000-01-01	3685.903
2001-01-01	3756.239
2002-01-01	3560.272
2003-01-01	3786.606
2004-01-01	4095.277
2005-01-01	4343.655
2006-01-01	5142.559
2007-01-01	5232.820
2008-01-01	3204.212
2009-01-01	4337.207
2010-01-01	4560.932