Year	Percent Change
1972-01-01	10.3713986754330000
1973-01-01	11.6896964426503000
1974-01-01	18.0673377798063000
1975-01-01	18.0180219009485000
1976-01-01	15.2857493325394000
1977-01-01	8.3626612405957400
1978-01-01	3.5351625048130700
1979-01-01	4.3875748813776800
1980-01-01	10.2307040960451000
1981-01-01	7.9495588363142500
1982-01-01	23.2860380664071000
1983-01-01	17.5283963621016000
1984-01-01	6.2211778304195300
1985-01-01	6.0302529285816500
1986-01-01	3.5789224186903500
1987-01-01	2.8101912714335300
1988-01-01	12.4759209967462000
1989-01-01	13.2923973738646000
1990-01-01	12.9207779740757000
1991-01-01	-4.3286411721856100
1992-01-01	2.2688166496766300
1993-01-01	0.1905382158372850
1994-01-01	1.6963957271965700
1995-01-01	7.6203374079020600
1996-01-01	3.1493854292193400
1997-01-01	1.1540099259798900
1998-01-01	4.8192030329108300
1999-01-01	-0.0391036735589849
2000-01-01	1.6635616642980000
2001-01-01	1.6276192764657400
2002-01-01	1.0531100897484100
2003-01-01	3.0922975730722900
2004-01-01	2.4999012831724600
2005-01-01	7.5052208975549500
2006-01-01	4.9888532700615800
2007-01-01	8.9032070382935300
2008-01-01	0.1463705973160620
2009-01-01	-7.2962690966591900
2010-01-01	-0.0897389320214604