Year	Percent Change
1972-01-01	7.47866370979235000
1973-01-01	10.89543599302200000
1974-01-01	18.92011383421270000
1975-01-01	12.64479416623230000
1976-01-01	8.83851399629414000
1977-01-01	5.21803396107378000
1978-01-01	6.44736396153217000
1979-01-01	9.18006383051058000
1980-01-01	13.44558217549070000
1981-01-01	8.71775848284580000
1982-01-01	6.84408048944604000
1983-01-01	6.80952390000904000
1984-01-01	5.19063688431552000
1985-01-01	3.87045569917692000
1986-01-01	7.59117333722644000
1987-01-01	3.90917980762555000
1988-01-01	4.09287250978847000
1989-01-01	8.03951602010211000
1990-01-01	6.49420426845234000
1991-01-01	1.63851811952293000
1992-01-01	1.44356991704897000
1993-01-01	-0.67400646325406600
1994-01-01	1.55986202791988000
1995-01-01	2.93741931584359000
1996-01-01	1.96360593127431000
1997-01-01	1.31379238500246000
1998-01-01	0.20687595876012600
1999-01-01	0.00270411871869411
2000-01-01	2.72608688225665000
2001-01-01	2.16215586240196000
2002-01-01	0.73655540837277400
2003-01-01	2.79163577245326000
2004-01-01	2.77983793774803000
2005-01-01	3.92209159932304000
2006-01-01	4.77100030566167000
2007-01-01	5.93408947539331000
2008-01-01	3.27420246922869000
2009-01-01	0.88337048321846800
2010-01-01	3.46005634258937000