Year	Percent Change
1988-01-01	78.36495009783270
1989-01-01	85.28992342540650
1990-01-01	78.36708257331870
1991-01-01	83.17701363717530
1992-01-01	58.68308969566710
1993-01-01	53.92906991315160
1994-01-01	68.16196087740830
1995-01-01	55.12396962277510
1996-01-01	95.87803489238110
1997-01-01	91.85294078527100
1998-01-01	69.88665155439220
1999-01-01	91.14175540167480
2000-01-01	43.33970869997060
2001-01-01	46.38307607196360
2002-01-01	29.14431305731150
2003-01-01	18.31895681713690
2004-01-01	9.58812582902533
2005-01-01	5.71880937329364
2006-01-01	5.55024207519124