Quarter	Percent Change
1970-04-01	0.49007120399881800
1970-07-01	0.97536249025201800
1970-10-01	1.44891156906870000
1971-01-01	1.90429063949817000
1971-04-01	1.63145319315761000
1971-07-01	1.37182065998691000
1971-10-01	1.12297219338822000
1972-01-01	0.88277461533275800
1972-04-01	1.15895972848152000
1972-07-01	1.42633881945382000
1972-10-01	1.68299079680836000
1973-01-01	1.92726535343165000
1973-04-01	2.29484508962559000
1973-07-01	2.63832052024012000
1973-10-01	2.95530731816379000
1974-01-01	3.24423496665673000
1974-04-01	3.69734765918931000
1974-07-01	4.10078333778204000
1974-10-01	4.45342344633382000
1975-01-01	4.75580712862006000
1975-04-01	3.98555986187485000
1975-07-01	3.29970953843497000
1975-10-01	2.67824348255395000
1976-01-01	2.10578232345955000
1976-04-01	2.11484623221456000
1976-07-01	2.12245221869468000
1976-10-01	2.12867749714851000
1977-01-01	2.13359715576368000
1977-04-01	2.18173543795394000
1977-07-01	2.22588227983852000
1977-10-01	2.26617020992464000
1978-01-01	2.30274082090143000
1978-04-01	2.33681409940137000
1978-07-01	2.36739826431079000
1978-10-01	2.39465156521111000
1979-01-01	2.41873423750368000
1979-04-01	2.57322930404831000
1979-07-01	2.71498278247377000
1979-10-01	2.84407408531877000
1980-01-01	2.96072321167534000
1980-04-01	2.88761533151671000
1980-07-01	2.81826491694988000
1980-10-01	2.75238791176395000
1981-01-01	2.68972825836437000
1981-04-01	2.83508445622856000
1981-07-01	2.96678129050397000
1981-10-01	3.08511075955484000
1982-01-01	3.19049189032758000
1982-04-01	2.86269836032683000
1982-07-01	2.56025750127126000
1982-10-01	2.27913465771012000
1983-01-01	2.01597780081748000
1983-04-01	1.81329735845084000
1983-07-01	1.62106077776608000
1983-10-01	1.43781128810900000
1984-01-01	1.26227188354958000
1984-04-01	1.36912101640482000
1984-07-01	1.47155742166494000
1984-10-01	1.56939109889166000
1985-01-01	1.66247480151622000
1985-04-01	1.27855984336352000
1985-07-01	0.91019375986921400
1985-10-01	0.55293568661620200
1986-01-01	0.20276624811921200
1986-04-01	0.41807087367031300
1986-07-01	0.63114716629360900
1986-10-01	0.84065822415425700
1987-01-01	1.04534004143024000
1987-04-01	0.83194395248596700
1987-07-01	0.62416943536284200
1987-10-01	0.42063365263994400
1988-01-01	0.22004399962137200
1988-04-01	0.20951549584151200
1988-07-01	0.19905310018213300
1988-10-01	0.18865320946807400
1989-01-01	0.17831237327765800
1989-04-01	0.47692522945847200
1989-07-01	0.77217276150702900
1989-10-01	1.06148758018613000
1990-01-01	1.34246906404950000
1990-04-01	1.23120742594059000
1990-07-01	1.05163776199002000
1990-10-01	0.71352785725774200
1991-01-01	0.52265727290996500
1991-04-01	0.43006318330765100
1991-07-01	0.36259371000319100
1991-10-01	0.43883052412098000
1992-01-01	0.63990577344828900
1992-04-01	0.87403119269288900
1992-07-01	0.90687093382616100
1992-10-01	0.77948324075391700
1993-01-01	0.58887956502608100
1993-04-01	0.18726293198080700
1993-07-01	-0.11884074360215500
1993-10-01	-0.19296396927210600
1994-01-01	-0.34220790268924600
1994-04-01	-0.36924398232281200
1994-07-01	-0.16462159667618300
1994-10-01	-0.14485162709072200
1995-01-01	-0.11650384559012100
1995-04-01	0.12674290606678800
1995-07-01	0.15743990290923700
1995-10-01	0.18343382406086900
1996-01-01	0.42471684856909800
1996-04-01	0.34407296246461400
1996-07-01	-0.10920227400722200
1996-10-01	-0.33990354133056700
1997-01-01	-0.34605516608984800
1997-04-01	-0.43583686955663900
1997-07-01	-0.31021459316930600
1997-10-01	-0.17694605520208100
1998-01-01	-0.27248499920391500
1998-04-01	-0.18333113356871000
1998-07-01	0.03377144387133610
1998-10-01	0.17197506659855700
1999-01-01	0.14765821272093900
1999-04-01	0.00560464781921266
1999-07-01	0.00652310012408514
1999-10-01	0.15957141489820300
2000-01-01	0.31942459866380000
2000-04-01	0.52582986937448600
2000-07-01	0.63692405238418200
2000-10-01	0.45692537859933300
2001-01-01	0.37244098409539400
2001-04-01	0.63352919077990600
2001-07-01	0.86948721644068200
2001-10-01	0.88254512781767500
2002-01-01	0.70258781120904300
2002-04-01	0.44303881165995200
2002-07-01	0.32121090819051300
2002-10-01	0.30102346447135200
2003-01-01	0.30641402089244300
2003-04-01	0.25145204431189400
2003-07-01	0.13242526310689500
2003-10-01	0.26135524845316600
2004-01-01	0.51291240403213500
2004-04-01	0.52834465819715400
2004-07-01	0.36560996606322500
2004-10-01	0.27817276705317400
2005-01-01	0.27133447694165600
2005-04-01	0.32838690343859200
2005-07-01	0.53971336433674000
2005-10-01	0.59792093131376000
2006-01-01	0.51569293474617700
2006-04-01	0.57867902976625400
2006-07-01	0.59109279328151400
2006-10-01	0.37315825143331800
2007-01-01	0.18140772767882200
2007-04-01	0.18124881067146100
2007-07-01	0.27866432654311200
2007-10-01	0.54198946217202900
2008-01-01	0.86734419747516400
2008-04-01	1.07360981058372000
2008-07-01	1.23801165459048000
2008-10-01	1.26476764304625000
2009-01-01	0.93513952616091500
2009-04-01	0.40720524794205100
2009-07-01	-0.01498105405731490
2009-10-01	-0.18010272975646300
2010-01-01	-0.04707060810735510
2010-04-01	0.15675006057421100
2010-07-01	0.26359571894428900
2010-10-01	0.27814088192244300
2011-01-01	0.22042586647820900