Year	Percent Change
1971-01-01	10.759545182218500
1972-01-01	5.551792669068070
1973-01-01	7.961873350343360
1974-01-01	8.389380919122730
1975-01-01	10.947773846868000
1976-01-01	7.502695867801430
1977-01-01	8.751173771314680
1978-01-01	5.196057443846080
1979-01-01	-1.747475854193860
1980-01-01	6.451837391280930
1981-01-01	11.670383918183800
1982-01-01	10.725836521665200
1983-01-01	3.481583917400380
1984-01-01	1.490900267735680
1985-01-01	4.786262310527500
1986-01-01	7.050128103601830
1987-01-01	11.195105188452300
1988-01-01	5.335755685225300
1989-01-01	-2.509368990758060
1990-01-01	0.162229508415096
1991-01-01	-0.145726941329906
1992-01-01	-0.677488869269754
1993-01-01	-0.860759277673809
1994-01-01	-1.270076979026780
1995-01-01	0.218589134346965
1996-01-01	0.352109419947652
1997-01-01	3.390126535524330
1998-01-01	7.959178211604900
1999-01-01	5.394649390596480
2000-01-01	2.125628007161290
2001-01-01	2.684594835939300
2002-01-01	2.841203520452460
2003-01-01	0.377767015723967
2004-01-01	1.486061028906490
2005-01-01	4.339050529697200
2006-01-01	8.695580796070960
2007-01-01	10.158388880492300
2008-01-01	9.185414699028960
2009-01-01	4.094043968452140
2010-01-01	3.381893751791400