Annual Percent
1971-01-01 20.052224104987900
1972-01-01 77.795733773312500
1973-01-01 352.811007014665000
1974-01-01 504.738522505321000
1975-01-01 374.735269459445000
1976-01-01 211.924280160440000
1977-01-01 91.954136727531700
1978-01-01 40.087241666005000
1979-01-01 33.389207240443200
1980-01-01 35.138347811969100
1981-01-01 19.686829636522500
1982-01-01 9.941020666420590
1983-01-01 27.257198454033700
1984-01-01 19.860209061059500
1985-01-01 30.703520901490000
1986-01-01 19.476847293518900
1987-01-01 19.880801233253400
1988-01-01 14.684352571779100
1989-01-01 17.027955738640700
1990-01-01 26.036472159678000
1991-01-01 21.784417376175100
1992-01-01 15.425805597341900
1993-01-01 12.727761039437400
1994-01-01 11.443120537664700
1995-01-01 8.232633317762570
1996-01-01 7.359117443570800
1997-01-01 6.133866369871860
1998-01-01 5.110243016190770
1999-01-01 3.336885341370240
2000-01-01 3.843273290112190
2001-01-01 3.569101680000860
2002-01-01 2.489394542705590
2003-01-01 2.810178611932350
2004-01-01 1.054738756505150
2005-01-01 3.052576581998840
2006-01-01 3.392017382845220
2007-01-01 4.407799046155090
2008-01-01 8.716267366466330
2009-01-01 0.353046309419725
2010-01-01 1.410809606373010
2011-01-01 3.340317435523260
2012-01-01 3.006520589954770
2013-01-01 1.928220312547920
2014-01-01 4.395000000000000
2015-01-01 4.348867282915850
2016-01-01 3.786661770780740
2017-01-01 2.182469485229090