Year	Percent Change
1971-01-01	7.332261292042660
1972-01-01	6.185503259483170
1973-01-01	6.818042698652730
1974-01-01	13.453097406634500
1975-01-01	19.627416694286700
1976-01-01	13.858403718003500
1977-01-01	11.219760969186800
1978-01-01	12.487080694177000
1979-01-01	10.630400199962200
1980-01-01	9.076625014528570
1981-01-01	5.678952364166010
1982-01-01	2.231994121970590
1983-01-01	13.958743194800700
1984-01-01	16.886179251155100
1985-01-01	4.859870158297350
1986-01-01	10.596857633260300
1987-01-01	9.549061159729090
1988-01-01	9.290301284719270
1989-01-01	13.016001056044200
1990-01-01	13.821230770490400
1991-01-01	7.619818281422770
1992-01-01	0.695635667429073
1993-01-01	-1.529215284321510
1994-01-01	7.093670016680720
1995-01-01	4.840021788740890
1996-01-01	7.347668630549310
1997-01-01	5.024360896932140
1998-01-01	5.611724406961820
1999-01-01	5.449681096138060
2000-01-01	10.925164085828800
2001-01-01	8.241646963675850
2002-01-01	2.207335607878100
2003-01-01	-1.013390078820310
2004-01-01	1.788469932277980
2005-01-01	1.876437052458990
2006-01-01	-0.029393237172004
2007-01-01	5.602736687481850
2008-01-01	2.032814519440320
2009-01-01	4.484476598447060
2010-01-01	1.424308770109310