Year	Percent Change
1971-01-01	6.394291100051430
1972-01-01	11.735923433691600
1973-01-01	13.923739779199300
1974-01-01	21.861129860201900
1975-01-01	15.485864872220800
1976-01-01	23.404105850839200
1977-01-01	19.072589286811100
1978-01-01	17.074160584167900
1979-01-01	22.361532906178700
1980-01-01	28.566827398219200
1981-01-01	14.130993057627400
1982-01-01	6.292904243694700
1983-01-01	5.782313947379860
1984-01-01	0.596793565615141
1985-01-01	0.522226110818255
1986-01-01	2.835336876726190
1987-01-01	3.900205215969400
1988-01-01	13.563075535555800
1989-01-01	2.982007106021470
1990-01-01	4.265805677294030
1991-01-01	11.405711154728700
1992-01-01	6.010494800341370
1993-01-01	3.657658576575920
1994-01-01	5.928422829119910
1995-01-01	9.844458659784850
1996-01-01	6.270563156130570
1997-01-01	-4.067869048448010
1998-01-01	-2.892372821795620
1999-01-01	-10.969718611044900
2000-01-01	-2.304924694334640
2001-01-01	5.081220950746130
2002-01-01	1.613079619202750
2003-01-01	-1.172553064385040
2004-01-01	2.475054510155320
2005-01-01	3.891831198081860
2006-01-01	-1.523146563667610
2007-01-01	-0.398566400295184
2008-01-01	0.666099031172702
2009-01-01	2.255191245999130
2010-01-01	-2.726345788694870