Year	Percent
1962-01-01	1.7549000000000000
1963-01-01	1.4703200000000000
1964-01-01	1.1513600000000000
1965-01-01	0.9547540000000001
1966-01-01	0.7950470000000001
1967-01-01	0.8048600000000000
1968-01-01	2.1079300000000000
1969-01-01	2.4113300000000000
1970-01-01	1.8832200000000001
1971-01-01	2.9597900000000004
1972-01-01	6.0247600000000000
1973-01-01	6.1003700000000000
1974-01-01	6.4809300000000000
1975-01-01	8.1079500000000000
1976-01-01	9.0902700000000000
1977-01-01	11.3180000000000000
1978-01-01	12.0442000000000000
1979-01-01	10.9847000000000000
1980-01-01	9.2695200000000000
1981-01-01	9.1154000000000000
1982-01-01	10.5791000000000000
1983-01-01	14.9900000000000000
1984-01-01	13.1241000000000000
1985-01-01	23.9329000000000000
1986-01-01	27.6466000000000000
1987-01-01	30.4382000000000000
1988-01-01	29.4811000000000000
1989-01-01	40.7597000000000000
1990-01-01	43.6553000000000000
1991-01-01	42.5917000000000000
1992-01-01	46.1563000000000000
1993-01-01	68.2368000000000000
1994-01-01	73.4287000000000000
1995-01-01	70.5813000000000000
1996-01-01	68.1023000000000000
1997-01-01	61.3866000000000000
1998-01-01	69.0572000000000000
1999-01-01	76.7408000000000000
2000-01-01	96.3551000000000000
2001-01-01	125.1770000000000000
2002-01-01	128.7550000000000000
2003-01-01	153.2370000000000000
2004-01-01	215.4659999999999800
2005-01-01	257.4950000000000000
2006-01-01	339.0430000000000000
2007-01-01	315.2800000000000000
2008-01-01	330.6000000000000000
2009-01-01	397.2040000000000000
2010-01-01	311.8800000000000000
2011-01-01	237.1660000000000000
2012-01-01	174.1600000000000000
2013-01-01	135.5710000000000000
2014-01-01	114.0310000000000000
2015-01-01	95.0641000000000000
2016-01-01	66.4250000000000000