Year annual % growth 1971 4.406205700033226 1972 6.002169146224972 1973 5.505944731744705 1974 0.6993288870160228 1975 2.39756058441462 1976 4.4265298755357065 1977 3.492855329017459 1978 4.013092645904351 1979 3.583951823762831 1980 1.1196561788894996 1981 1.443383051458568 1982 1.4005661541662846 1983 3.1426562489879757 1984 3.320382696869089 1985 3.8365623981728874 1986 3.9522312008919442 1987 3.6247218900754774 1988 4.159249801512075 1989 3.5514023279618527 1990 2.9371337924954304 1991 1.2478786965905613 1992 2.8012328017768198 1993 1.9116722345429622 1994 2.998386894413869 1995 2.4418229538850653 1996 3.0975802218752477 1997 3.196901219295171 1998 3.4328456209732394 1999 4.109629539068621 2000 4.127311758415388 2001 2.2754518023015464 2002 2.14341384261445 2003 2.330336681206518 2004 2.934250628240548 2005 2.9498058573590242 2006 2.5572634952600595 2007 2.4775746845828763 2008 0.38151777447370705 2009 -1.2881847148212273 2010 2.1579407105388952 2011 1.418448123494727 2012 1.0668901317391715 2013 1.5110442820585064 2014 1.959676182998578 2015 2.6062183796461795 2016 2.227087644454201 2017 2.3699471821536378 2018 2.1465893514611025 2019 1.5442581846693173 2020 -4.959645673047021 2021 6.53110371329619 2022 3.727860888162965