Year annual % growth 1971 5.683430276284952 1972 8.677288815328893 1973 10.733486946037772 1974 4.954187290390138 1975 -2.402769218452832 1976 9.328264993578856 1977 5.128084916783521 1978 4.847787302221548 1979 6.264583094701621 1980 3.3826617898468356 1981 4.304625933115204 1982 -0.12149054899266787 1983 4.31069616207715 1984 9.467748141510256 1985 3.741707148631207 1986 2.0842203829677004 1987 6.219285333188381 1988 8.27515784944066 1989 6.45241299157864 1990 5.0640454944363285 1991 2.8634803910714908 1992 3.432377982771115 1993 3.5959623380411756 1994 8.887082794630999 1995 9.011565712798458 1996 6.483497412065958 1997 9.959986196337937 1998 4.523365104698513 1999 5.505326278341897 2000 11.85485235407539 2001 0.7711059535576084 2002 2.881448407044445 2003 4.441679539168476 2004 10.19613014377994 2005 6.989745197597344 2006 8.648876112509527 2007 6.744875380996547 2008 2.9908691363138615 2009 -9.73568242027467 2010 11.936209957585135 2011 5.457581919063998 2012 2.753479123176234 2013 3.0682927745138215 2014 3.51462945799166 2015 3.4014043251109314 2016 2.5433154259195874 2017 5.290554258964917 2018 4.4360651400251925 2019 1.2310606933555874 2020 -8.778654373377464 2021 10.273251552855484 2022 6.12999396666882 2023 0.3472800120357249