Year	Percent Change
1971-01-01	7.321940094295000
1972-01-01	15.615958439681400
1973-01-01	18.639331034348600
1974-01-01	14.535678332595300
1975-01-01	40.492211706551900
1976-01-01	23.116510195744900
1977-01-01	33.075702185562100
1978-01-01	74.040365409954500
1979-01-01	44.187120575855000
1980-01-01	12.179567012522000
1981-01-01	8.924321372632460
1982-01-01	-0.210152827733619
1983-01-01	0.708526196517944
1984-01-01	9.650091468262460
1985-01-01	2.935403764200200
1986-01-01	8.051398437241060
1987-01-01	16.243381576798900
1988-01-01	20.515088018459700
1989-01-01	23.290306244931500
1990-01-01	25.106980070456600
1991-01-01	16.573896584815600
1992-01-01	10.999935691656000
1993-01-01	2.704163562571650
1994-01-01	3.855754579202600
1995-01-01	8.534590159859180
1996-01-01	10.085168199239100
1997-01-01	10.311817500984100
1998-01-01	-2.153382251863970
1999-01-01	-0.756580061988641
2000-01-01	6.695749857703940
2001-01-01	9.468308636233860
2002-01-01	9.155117451243420
2003-01-01	12.216055555539200
2004-01-01	3.414886873328210
2005-01-01	1.866889154996070
2006-01-01	-1.080829047440200
2007-01-01	-1.002737075479410
2008-01-01	1.169157952043540
2009-01-01	1.222595688665740
2010-01-01	6.374481486451750