Year Growth Rate Previous Period 1956-01-01 10.19837130573230 1957-01-01 5.88372445879953 1958-01-01 2.40305788350853 1959-01-01 5.46728096874218 1960-01-01 7.36814154288056 1961-01-01 4.39366002579547 1962-01-01 7.91713950258134 1963-01-01 10.67686262383210 1964-01-01 12.71752967972950 1965-01-01 9.30006256158836 1966-01-01 9.86333363672840 1967-01-01 8.23683516240652 1968-01-01 8.47104055200550 1969-01-01 9.63182173475960 1970-01-01 13.71220469197230 1971-01-01 12.88976114135520 1972-01-01 12.86013991282280 1973-01-01 17.36218128853930 1974-01-01 14.23925738852330 1975-01-01 8.06260183302467 1976-01-01 12.68394645587500 1977-01-01 17.18540821347160 1978-01-01 -4.16574154185372 1979-01-01 14.84632310831670 1980-01-01 12.61727978862420 1981-01-01 16.36163355456720 1982-01-01 10.23620300724000 1983-01-01 13.78008155849030 1984-01-01 17.34739491482660 1985-01-01 15.52589390436430 1986-01-01 13.08421425761500 1987-01-01 15.68856234745700 1988-01-01 14.57308599489490 1989-01-01 18.17524604284090 1990-01-01 19.29968804220670 1991-01-01 16.90650336716970 1992-01-01 20.46209001150890 1993-01-01 9.50327775869195 1994-01-01 23.23459189214210 1995-01-01 20.37279707954780 1996-01-01 11.93617910893210 1997-01-01 12.46970174552900 1998-01-01 11.61417488998400 1999-01-01 14.67238490506200 2000-01-01 12.54790589976890 2001-01-01 11.16655714724120 2002-01-01 11.51774544849400 2003-01-01 13.83279687279700 2004-01-01 17.83316042713700 2005-01-01 16.80613976935520 2006-01-01 21.33151164168090 2007-01-01 15.70317512874570 2008-01-01 17.09466654344560 2009-01-01 13.41040004872670 2010-01-01 18.28374351925330 2011-01-01 7.70642658335228 2012-01-01 8.96673024522637 2013-01-01 9.27803552170332