Annual Percent
1960-01-01 16.748400000000000
1961-01-01 15.330900000000000
1962-01-01 16.427900000000000
1963-01-01 19.353900000000000
1964-01-01 19.942300000000000
1965-01-01 20.236500000000000
1966-01-01 19.889900000000000
1967-01-01 21.061800000000000
1968-01-01 23.550600000000000
1969-01-01 26.342700000000000
1970-01-01 27.356700000000000
1971-01-01 29.276000000000000
1972-01-01 30.181700000000000
1973-01-01 30.075000000000000
1974-01-01 29.421500000000000
1975-01-01 29.843000000000004
1976-01-01 30.678100000000000
1977-01-01 30.474300000000000
1978-01-01 28.808000000000003
1979-01-01 30.146600000000000
1980-01-01 32.630100000000000
1981-01-01 36.294700000000000
1982-01-01 41.311800000000000
1983-01-01 43.090900000000000
1984-01-01 42.496600000000000
1985-01-01 42.883400000000000
1986-01-01 47.079200000000000
1987-01-01 49.877200000000000
1988-01-01 52.572600000000000
1989-01-01 53.355600000000000
1990-01-01 37.944100000000000
1991-01-01 31.741900000000000
1992-01-01 29.763500000000000
1993-01-01 30.066500000000000
1994-01-01 31.627200000000000
1995-01-01 31.191400000000000
1996-01-01 34.352900000000000
1997-01-01 34.049100000000000
1998-01-01 34.323800000000000
1999-01-01 33.842400000000000
2000-01-01 33.964800000000000
2001-01-01 38.256300000000000
2002-01-01 42.199900000000000
2003-01-01 41.344400000000000
2004-01-01 40.818300000000000
2005-01-01 41.201900000000000
2006-01-01 40.466800000000000
2007-01-01 38.846800000000000
2008-01-01 39.665600000000000
2009-01-01 38.596900000000000
2010-01-01 39.011900000000000
2011-01-01 37.529300000000000
2012-01-01 37.785600000000000
2013-01-01 38.833600000000000
2014-01-01 39.774200000000000
2015-01-01 39.907300000000000
2016-01-01 42.794100000000000