Year	Percent Change
1971-01-01	8.491644409626990
1972-01-01	8.353808271704660
1973-01-01	8.026291088350050
1974-01-01	14.940964451387300
1975-01-01	19.567564703716200
1976-01-01	9.077921400816290
1977-01-01	8.032582214452260
1978-01-01	4.401111538987640
1979-01-01	4.305387306281590
1980-01-01	3.701517625548540
1981-01-01	5.192148588363960
1982-01-01	5.304622730913530
1983-01-01	4.227778071554680
1984-01-01	3.098933897260820
1985-01-01	4.825517208136690
1986-01-01	2.813126742376270
1987-01-01	1.153837366613380
1988-01-01	-0.484649409643530
1989-01-01	3.435221819783460
1990-01-01	4.422977379031110
1991-01-01	6.737676018564880
1992-01-01	4.633279170784080
1993-01-01	3.436702446485050
1994-01-01	1.798806964499890
1995-01-01	0.236378035033046
1996-01-01	0.153368687467157
1997-01-01	-0.518896487683163
1998-01-01	1.062598019979220
1999-01-01	1.559056108032460
2000-01-01	0.603308999586860
2001-01-01	3.716447895334550
2002-01-01	2.369746268245410
2003-01-01	0.942526683926383
2004-01-01	0.148346934405998
2005-01-01	1.258185987266220
2006-01-01	1.917389693162910
2007-01-01	2.259336479831590
2008-01-01	3.333670672452790
2009-01-01	3.562332767257860
2010-01-01	0.929035000826114