Annual Percent
1960-01-01 65.03640000000000
1961-01-01 70.85110000000000
1962-01-01 82.68390000000000
1963-01-01 87.25540000000000
1964-01-01 90.02280000000000
1965-01-01 94.15500000000000
1966-01-01 96.20120000000000
1967-01-01 98.83990000000000
1968-01-01 96.97450000000000
1969-01-01 92.68040000000000
1970-01-01 93.82410000000000
1971-01-01 90.03820000000000
1972-01-01 87.18799999999999
1973-01-01 88.40230000000000
1974-01-01 89.29280000000000
1975-01-01 86.70340000000000
1976-01-01 80.08710000000000
1977-01-01 79.53170000000000
1978-01-01 77.56850000000000
1979-01-01 76.82660000000000
1980-01-01 78.73860000000000
1981-01-01 80.33880000000000
1982-01-01 80.52940000000000
1983-01-01 78.11040000000000
1984-01-01 82.86010000000000
1985-01-01 94.08420000000000
1986-01-01 100.48400000000000
1987-01-01 95.35870000000000
1988-01-01 92.52720000000000
1989-01-01 97.27730000000000
1990-01-01 99.19540000000000
1991-01-01 95.11300000000000
1992-01-01 86.03630000000000
1993-01-01 79.66950000000000
1994-01-01 75.13620000000000
1995-01-01 75.72310000000000
1996-01-01 75.55670000000000
1997-01-01 69.81960000000000
1998-01-01 68.83890000000000
1999-01-01 73.85040000000000
2000-01-01 79.00760000000000
2001-01-01 78.12010000000000
2002-01-01 71.14330000000000
2003-01-01 69.02840000000000
2004-01-01 74.76320000000000
2005-01-01 77.14110000000000
2006-01-01 77.79410000000000
2007-01-01 77.96240000000000
2008-01-01 81.35660000000000
2009-01-01 80.46660000000000
2010-01-01 71.51720000000000
2011-01-01 65.63650000000000
2012-01-01 58.12670000000000
2013-01-01 51.82230000000000
2014-01-01 49.33970000000000
2015-01-01 48.68260000000000
2016-01-01 48.16080000000000