Year	Percent Change
1971-01-01	10.384974506859400
1972-01-01	16.257552073046300
1973-01-01	16.165043931998200
1974-01-01	20.539408094559500
1975-01-01	19.747813723094300
1976-01-01	23.515499600407900
1977-01-01	13.700614687311300
1978-01-01	24.978613202559300
1979-01-01	20.623939433614700
1980-01-01	29.312606964417700
1981-01-01	15.634509476609900
1982-01-01	6.767555308815810
1983-01-01	3.874743124293360
1984-01-01	-1.998682224443980
1985-01-01	0.778473896483216
1986-01-01	3.060944227407120
1987-01-01	4.019698503683850
1988-01-01	9.012791529274520
1989-01-01	8.102438916043160
1990-01-01	9.648319657045230
1991-01-01	9.819101614427780
1992-01-01	7.768995539996740
1993-01-01	6.480026766553430
1994-01-01	6.836789705012580
1995-01-01	8.828514369117630
1996-01-01	7.686452663603130
1997-01-01	0.753577267901717
1998-01-01	-1.271493097782780
1999-01-01	-3.041511817515000
2000-01-01	0.741304078752900
2001-01-01	5.437297980778070
2002-01-01	1.752767625789670
2003-01-01	4.732369834972020
2004-01-01	1.407698641644380
2005-01-01	2.417779202353200
2006-01-01	0.173273085032388
2007-01-01	0.745701691125538
2008-01-01	2.471222816094250
2009-01-01	0.570071241535005
2010-01-01	-1.471188861088530