Year	Percent Change from Year Ago
1971-01-01	3.13709895227911000
1972-01-01	4.30442444939353000
1973-01-01	4.76891610031321000
1974-01-01	0.89397195585340400
1975-01-01	-0.86670426097848500
1976-01-01	4.95296763493618000
1977-01-01	3.33581306001620000
1978-01-01	3.01579870881846000
1979-01-01	4.15720419163830000
1980-01-01	1.39527083021631000
1981-01-01	0.53587470400844300
1982-01-01	-0.39811844693090900
1983-01-01	1.56910721732874000
1984-01-01	2.82629149757572000
1985-01-01	2.32477269324017000
1986-01-01	2.29050147307967000
1987-01-01	1.40215069972001000
1988-01-01	3.70425596256232000
1989-01-01	3.90528418111716000
1990-01-01	5.24365281593375000
1991-01-01	5.11641385086379000
1992-01-01	1.92374614221594000
1993-01-01	-0.96234415424773700
1994-01-01	2.46371818763977000
1995-01-01	1.73146934368950000
1996-01-01	0.82694319735279000
1997-01-01	1.83716056236750000
1998-01-01	1.98851995240139000
1999-01-01	1.98420690163172000
2000-01-01	2.95922935148791000
2001-01-01	1.70372216862582000
2002-01-01	-0.00268883232762052
2003-01-01	-0.71526572324579500
2004-01-01	1.17271121957878000
2005-01-01	0.70671353014646700
2006-01-01	3.69484296247320000
2007-01-01	3.26326625305437000
2008-01-01	1.08730702913948000
2009-01-01	-5.62363419077470000
2010-01-01	4.08524389590277000
2011-01-01	3.65240863376941000
2012-01-01	0.49925230929633900
2013-01-01	0.48237330399489200
2014-01-01	2.18772375517093000
2015-01-01	1.73187521972462000
2016-01-01	2.24458361804114000
2017-01-01	2.15261559674551000