Year Growth Rate Previous Period 1971-01-01 10.28946081076030 1972-01-01 11.09980966870480 1973-01-01 13.00446940925150 1974-01-01 11.38754520715670 1975-01-01 12.62759263060700 1976-01-01 14.74140295244760 1977-01-01 9.41365661713286 1978-01-01 12.00717476840440 1979-01-01 12.85168520447880 1980-01-01 17.94109440267860 1981-01-01 33.11602973992350 1982-01-01 30.77488278577580 1983-01-01 19.24123767176460 1984-01-01 19.78700244101570 1985-01-01 25.04889093793420 1986-01-01 25.88351763496210 1987-01-01 32.95870421672980 1988-01-01 21.14092823407660 1989-01-01 22.94897192008040 1990-01-01 22.24131115424610 1991-01-01 18.77206790802750 1992-01-01 22.47826005699780 1993-01-01 19.37602672708030 1994-01-01 27.64619224926600 1995-01-01 20.69683438643090 1996-01-01 13.03196713046090 1997-01-01 11.80515021010330 1998-01-01 11.47862235778320 1999-01-01 9.86692378698750 2000-01-01 10.54581931244920 2001-01-01 11.71807563173600 2002-01-01 8.53177032979476 2003-01-01 7.89500493227615 2004-01-01 7.22599440716105 2005-01-01 8.69665285076167 2006-01-01 10.50305154755450 2007-01-01 12.03946467492510 2008-01-01 11.47309974458500 2009-01-01 6.11350953658185 2010-01-01 1.97712938250336 2011-01-01 2.52357178176745 2012-01-01 3.33606964079812 2013-01-01 3.45538258756502