Year annual % growth 1976 11.553035097941617 1977 8.962402583335034 1978 18.114807221248455 1979 17.917862811843335 1980 -0.4485341204816393 1981 6.6373552200047925 1982 3.472691017393629 1983 5.288619817154853 1984 8.343369680163477 1985 30.60950481191219 1986 15.171034096801762 1987 13.525507920906094 1988 18.763498979746714 1989 4.855499239215575 1990 14.983475127177854 1991 9.715534300538224 1992 3.5344850315234027 1993 9.370145751532363 1994 -11.706523895525265 1995 11.917784699164471 1996 12.86784786357073 1997 12.490367180571837 1998 -2.606211615404405 1999 10.911531648103121 2000 -1.8865821579050532 2001 2.7489350464687163 2002 -11.213642029369069 2003 -6.451603767912175 2004 2.7107577277862447 2005 20.789435019358223 2006 10.331046522717571 2007 10.719453794668937 2008 11.706477162729811 2009 -6.360269753146568 2010 11.198140149640466 2011 19.78843095267642 2012 0.9900923362875318 2013 6.313109643629872 2014 9.20846267704907 2015 -5.84107054569526 2016 5.604693396139098 2017 -1.3020995906838095 2018 -2.261884219091158 2019 8.351389105223106 2020 0.15710774816295725 2021 3.2416171601365846