Annual Percent
1968-01-01 0.000531000000000000
1969-01-01 0.000482000000000000
1970-01-01 0.000446000000000000
1971-01-01 0.024712000000000000
1972-01-01 0.061703999999999995
1973-01-01 1.332150000000000000
1974-01-01 1.078930000000000000
1975-01-01 4.115320000000000000
1976-01-01 5.864759999999999500
1977-01-01 7.345590000000000000
1978-01-01 9.515419999999999000
1979-01-01 7.686450000000000000
1980-01-01 8.524300000000000000
1981-01-01 9.057860000000000000
1982-01-01 11.708000000000000000
1983-01-01 12.674100000000000000
1984-01-01 12.416700000000000000
1985-01-01 8.903490000000000000
1986-01-01 7.366569999999999000
1987-01-01 6.798230000000000000
1988-01-01 6.610020000000000000
1989-01-01 8.861369999999999000
1990-01-01 10.077100000000000000
1991-01-01 9.658160000000000000
1992-01-01 9.658160000000000000
1993-01-01 9.658160000000000000
1994-01-01 9.658160000000000000
1995-01-01 9.658160000000000000
1996-01-01 9.658160000000000000
1997-01-01 9.658160000000000000
1998-01-01 9.658160000000000000
1999-01-01 9.658160000000000000
2000-01-01 9.658160000000000000
2001-01-01 9.658160000000000000
2002-01-01 9.658160000000000000
2003-01-01 9.658160000000000000
2004-01-01 9.658160000000000000
2005-01-01 23.536600000000000000
2006-01-01 16.728700000000000000
2007-01-01 15.387800000000000000
2008-01-01 14.721600000000000000
2009-01-01 15.774900000000000000
2010-01-01 13.836800000000000000
2011-01-01 11.923700000000000000
2012-01-01 11.362600000000000000