Year	Percent Change
1967-01-01	2.463053200044300
1968-01-01	-1.301922337811770
1969-01-01	5.500899072449010
1970-01-01	5.968385788044830
1971-01-01	8.110796361128850
1972-01-01	3.935152213747710
1973-01-01	13.699805753296400
1974-01-01	18.610121381842200
1975-01-01	7.705104537261650
1976-01-01	9.929639147785500
1977-01-01	7.551703261616110
1978-01-01	8.711882125233050
1979-01-01	5.984458771676750
1980-01-01	6.737287357848040
1981-01-01	8.356938132593640
1982-01-01	2.417032258446320
1983-01-01	1.200755500852950
1984-01-01	6.776411906821870
1985-01-01	2.757316595591400
1986-01-01	3.686388028310040
1987-01-01	9.238028070222900
1988-01-01	1.997577224745520
1989-01-01	0.252456715880928
1990-01-01	1.604791504377120
1991-01-01	3.931098848156600
1992-01-01	1.013675513316300
1993-01-01	1.951820340359430
1994-01-01	-5.316493646668100
1995-01-01	0.977723695049621
1996-01-01	3.523918837835930
1997-01-01	-2.346620269108640
1998-01-01	3.323855866503770
1999-01-01	-0.528405725167867
2000-01-01	-1.000852117820070
2001-01-01	3.532202035142190
2002-01-01	2.660348564928180
2003-01-01	2.004005429600880
2004-01-01	-2.350129368434640
2005-01-01	2.865320222741180
2006-01-01	2.672788707462350
2007-01-01	6.374551635736880
2008-01-01	2.355545557583470
2009-01-01	3.287726017787980
2010-01-01	-4.809226761617700