Year annual % growth 1962 4.55128203069641 1963 7.36918516409733 1964 6.48154414906139 1965 8.63204490707534 1966 7.40154699396443 1967 7.29632872076328 1968 9.70608122868239 1969 8.33704302244034 1970 6.84697567173612 1971 6.67623124158308 1972 8.37131234394445 1973 21.0018835197415 1974 8.28017779355115 1975 -7.07485819668189 1976 7.97588886679239 1977 7.38564565096056 1978 9.2087209270251 1979 14.5089735442516 1980 -0.25120884455292 1981 5.4833886996968 1982 1.21755045709213 1983 2.01079037118215 1984 7.6125952235181 1985 -1.15773250893977 1986 7.69428066793176 1987 12.7950447596368 1988 17.2952351047587 1989 15.3965192250111 1990 10.6209202031057 1991 6.52264868482135 1992 5.31093163631718 1993 5.92911179619327 1994 12.822606588426 1995 16.1977494820482 1996 8.49648297556098 1997 4.9620733753772 1998 -7.89284402258136 1999 3.4352555675877 2000 15.4983860784785 2001 -2.33162884390411 2002 5.03641961107107 2003 7.60082764820496 2004 14.2807954471609 2005 8.65870441495706 2006 7.43386799923343 2007 6.8095229842222 2008 4.47820543833832 2009 -11.3807676900077 2010 15.8495049713342 2011 7.65971529518102 2012 4.52045426756982 2013 4.12811727444016 2014 3.42672282177254 2015 1.41862034011386 2016 1.70509479524621 2017 6.92517548434184