Year	Percent Change
1971-01-01	5.905259219090890
1972-01-01	4.339331241699250
1973-01-01	3.446641684891310
1974-01-01	13.130885528555700
1975-01-01	19.363263609683600
1976-01-01	14.527966870482100
1977-01-01	10.093696456520800
1978-01-01	9.868675161825560
1979-01-01	3.357167457022160
1980-01-01	9.179482563655500
1981-01-01	9.105982208200050
1982-01-01	3.117400158205800
1983-01-01	5.264730297464480
1984-01-01	6.251274590661640
1985-01-01	7.955329408768940
1986-01-01	5.896121415284500
1987-01-01	5.419261160688460
1988-01-01	6.656588598201480
1989-01-01	9.896883135423380
1990-01-01	8.694151798630830
1991-01-01	6.028572701913710
1992-01-01	-0.923909638792823
1993-01-01	-2.576383014785410
1994-01-01	-0.601293906882297
1995-01-01	-0.624676871420818
1996-01-01	3.819775643211540
1997-01-01	0.139074507136606
1998-01-01	-0.103779007745824
1999-01-01	-0.809804268822535
2000-01-01	3.502755647420410
2001-01-01	5.023012296691550
2002-01-01	-0.876443346303082
2003-01-01	-1.446887387716350
2004-01-01	-2.175279577872660
2005-01-01	-0.678598042308912
2006-01-01	-0.858414084666437
2007-01-01	3.819173644004560
2008-01-01	3.962599847830230
2009-01-01	3.349835582565580
2010-01-01	-2.170415084473830