Year annual % 1969 -1.1015911872741 1970 5.8580858085174 1971 4.01402961809857 1972 8.09291869579621 1973 10.3847487003839 1974 17.2329334923306 1975 13.5533294051262 1976 9.93065056369725 1977 14.6983091581554 1978 12.4630523441787 1979 6.58061081902716 1980 9.55175427642866 1981 10.7275000000004 1982 13.2570198610704 1983 16.6312264100787 1984 11.3733220902937 1985 8.50837434391595 1986 7.77002498703532 1987 13.140499844701 1988 1.6823326077121 1989 -1.66552589550544 1990 1.09938128383608 1991 0.0600513305003455 1992 -0.0160550458717418 1993 -3.20655456915868 1994 35.0944618459464 1995 9.06969071921509 1996 3.92406372749798 1997 4.78623881860376 1998 3.17075185386907 1999 1.87174500672008 2000 1.22719012976132 2001 4.41977245881146 2002 2.83442260128067 2003 0.623163557374316 2004 0.233647380067584 2005 2.01353950175986 2006 5.11757816019469 2007 0.921402245650095 2008 5.33780627627498 2009 3.04361847939999 2010 1.27538046242338 2011 2.93969946305091 2012 2.73529677529539 2013 2.05034718001741 2014 1.85489850366777 2015 2.676235314199 2016 0.874190383288856 2017 0.64040914988195 2018 1.0688581131292 2019 2.45280214062732 2020 2.43760882182236 2021 2.27185762503637 2022 6.24767713343861 2023 7.38281384280984