Year % of GDP 1972 0.03174907792030095 1973 0.011593007399636002 1974 0.006617019733276497 1975 0.006797674875200869 1976 0.005236440194345995 1977 0.2695815707746083 1978 0.12512378791054637 1979 0.06968764095482305 1980 0.11381968835550596 1981 0.06964634736880039 1982 0.05702969671131593 1983 0 1984 0 1985 0 1986 0 1987 0.4249701053694978 1988 0.23032588734350876 1989 0.1393128838008663 1990 0.36408039141138765 1991 0.543368721106942 1992 -0.444397302955389 1993 -1.56343651005275 1994 0.09029792888654965 1995 0.2687266339833079 1996 0.1871922171367743 1997 0.7604775820235483 1998 0.9386272805892705 1999 0.6280717504842752 2000 0.256068870523416 2001 0.513014534883721 2002 -0.6640012302014455 2003 0.23985722784057112 2004 0.8634664065584432 2005 0.2704147774979009 2006 0.7887612293683278 2007 5.780725896521015 2008 6.790621482808024 2009 1.9158486256585714 2010 3.6109978867251153 2011 0.27195765731389854 2012 2.711016389848161 2013 0.9392031887826983 2014 -0.13525677863362953 2015 0.8105916545175964 2016 0.8805484673512382 2017 -0.4385216985344863 2018 0.35938749315732005 2019 -0.37249263417618433 2020 0.5334270689600985 2021 0.47167847898362997 2022 0.08938351405885332