Year	Percent Change
1971-01-01	10.938951442409300
1972-01-01	10.694809774032700
1973-01-01	14.117544538470500
1974-01-01	21.998910377252800
1975-01-01	17.863101551949800
1976-01-01	7.742104282812950
1977-01-01	0.256076568950491
1978-01-01	3.312469179180920
1979-01-01	8.979028061438350
1980-01-01	7.713992265066560
1981-01-01	14.296755034134100
1982-01-01	7.452510775356500
1983-01-01	9.440453640887190
1984-01-01	14.284164128635300
1985-01-01	7.279061769329870
1986-01-01	7.852843025533590
1987-01-01	8.984550373716140
1988-01-01	7.731544047811400
1989-01-01	5.397550854425440
1990-01-01	1.685314106873380
1991-01-01	0.625522609767865
1992-01-01	-2.600643288322800
1993-01-01	-4.787527980982930
1994-01-01	1.943930718498780
1995-01-01	13.492238687545000
1996-01-01	2.315066444891520
1997-01-01	3.202431036350030
1998-01-01	5.393267124295700
1999-01-01	8.816409248993610
2000-01-01	8.236193490215010
2001-01-01	9.971050713854370
2002-01-01	2.486086659916440
2003-01-01	-3.082205910066900
2004-01-01	-1.203485741985290
2005-01-01	2.211296796978790
2006-01-01	3.934739218800190
2007-01-01	8.072807363508030
2008-01-01	9.469247190543930
2009-01-01	4.255801421178260
2010-01-01	-1.491005106827980