Year	Percent
1970-01-01	110.90578290
1971-01-01	120.80949350
1972-01-01	107.56843800
1973-01-01	105.89970500
1974-01-01	131.74603180
1975-01-01	130.12669100
1976-01-01	122.42879750
1977-01-01	117.15154820
1978-01-01	112.99204570
1979-01-01	117.48546600
1980-01-01	143.00811470
1981-01-01	127.54625720
1982-01-01	114.74541080
1983-01-01	102.45586240
1984-01-01	92.14256784
1985-01-01	76.64471801
1986-01-01	65.31058863
1987-01-01	56.68724805
1988-01-01	53.69971574
1989-01-01	65.52016516
1990-01-01	54.13211649
1991-01-01	38.67690446
1992-01-01	25.79246148
1993-01-01	240.59729540
1994-01-01	217.32383830
1995-01-01	187.57734210
1996-01-01	140.67538510
1997-01-01	122.51475050
1998-01-01	95.84318854
1999-01-01	119.43123370
2000-01-01	118.95250990
2001-01-01	145.49245240
2002-01-01	92.79330153
2003-01-01	106.19408000
2004-01-01	128.52502520
2005-01-01	128.33645940
2006-01-01	121.45126630
2007-01-01	121.09136380
2008-01-01	123.74953180
2009-01-01	103.86981800
2010-01-01	117.10878070