Year	Percent Change
1988-01-01	79.94020154258240
1989-01-01	85.52922963377610
1990-01-01	87.53068617003060
1991-01-01	78.89110516021910
1992-01-01	54.92626283239500
1993-01-01	53.37566212099450
1994-01-01	62.65477793421890
1995-01-01	64.42393070417450
1996-01-01	122.19869776448800
1997-01-01	96.34114623245320
1998-01-01	65.52136833370240
1999-01-01	97.90812848856440
2000-01-01	47.07844848885170
2001-01-01	42.23346166932840
2002-01-01	30.02059138014140
2003-01-01	23.01447069098810
2004-01-01	11.88824316501400
2005-01-01	3.19380943910968
2006-01-01	3.77221464620119