Quarter	Percent Change
1987-04-01	7.69825691388852
1987-07-01	14.29597309089930
1987-10-01	18.76182781490770
1988-01-01	21.06376084448660
1988-04-01	16.50933004521170
1988-07-01	13.40641880259870
1988-10-01	11.14828755404860
1989-01-01	9.42437401415698
1989-04-01	16.90852234606520
1989-07-01	21.55904598953240
1989-10-01	23.57296626744160
1990-01-01	23.80008123312160
1990-04-01	20.45707092167940
1990-07-01	18.00603513919250
1990-10-01	16.12560069948690
1991-01-01	14.63298059004420
1991-04-01	14.56928984623370
1991-07-01	14.29136408311540
1991-10-01	13.88219760952360
1992-01-01	13.39986962727840
1992-04-01	12.11631317107190
1992-07-01	11.07435195848760
1992-10-01	10.21098462712620
1993-01-01	9.48340713843642
1993-04-01	9.64387170836368
1993-07-01	9.69118008171108
1993-10-01	9.65139397215683
1994-01-01	9.54645453325948
1994-04-01	13.11722991781330
1994-07-01	15.48829793753030
1994-10-01	16.78131859679700
1995-01-01	17.25575366080080
1995-04-01	20.15588354401590
1995-07-01	21.30185268938710
1995-10-01	21.29310156361090
1996-01-01	20.63198567427690
1996-04-01	20.11371093622950
1996-07-01	19.25190364008360
1996-10-01	18.24562021903400
1997-01-01	17.20769350158750
1997-04-01	20.33792763994330
1997-07-01	21.60124161883930
1997-10-01	21.62955196245650
1998-01-01	20.96127611337330
1998-04-01	18.51949925636960
1998-07-01	16.63024577255990
1998-10-01	15.12025738522330
1999-01-01	13.88249772170600
1999-04-01	15.07751928877490
1999-07-01	15.61108064871400
1999-10-01	15.67333053258910
2000-01-01	15.42582049062170
2000-04-01	10.28991707550980
2000-07-01	9.16007631528931
2000-10-01	8.24681480025813
2001-01-01	7.14080464284033
2001-04-01	5.99805348262014
2001-07-01	5.31268398904413
2001-10-01	5.19933427055935
2002-01-01	5.13982431527891
2002-04-01	4.92932807948608
2002-07-01	4.51434392618978
2002-10-01	11.71115175350730
2003-01-01	3.31148490125673
2003-04-01	3.09034657966264
2003-07-01	2.83310529242221
2003-10-01	2.45329408707148
2004-01-01	2.13549905557747
2004-04-01	2.00545143225260
2004-07-01	1.94293861556277
2004-10-01	1.92683801412458
2005-01-01	1.87476219554318
2005-04-01	1.59068574821014
2005-07-01	1.32901156066804
2005-10-01	1.39414598295216
2006-01-01	1.52595597762799
2006-04-01	1.61650233252462
2006-07-01	1.64507203915610
2006-10-01	1.49266325424957