Year annual % 1977 7.863501483679524 1978 0.9112792297111417 1979 2.9647299369568922 1980 -12.940592420982956 1981 1.1615662421592854 1982 52.00512578657713 1983 8.751180487226016 1984 26.674615587462373 1985 13.612116328671299 1986 25.7322702807296 1987 -6.261267429575032 1988 5.203176305032501 1989 47.36204470596778 1990 5.632576703929015 1991 -0.3431109379756905 1992 -4.58226901111138 1993 5.21496166032585 1994 2.8715920524167493 1995 13.300090528464384 1996 10.071799053884908 1997 -0.34315433560710806 1998 12.608600657002187 1999 -9.194912509758069 2000 5.53767134430037 2001 5.474485096927552 2002 -1.6155250350270296 2003 -0.8586146291878869 2004 9.907380480469898 2005 11.571339010668112 2006 7.033086412814243 2007 15.956363593894658 2008 13.351310983042328 2009 0.45607691910310183 2010 -5.996107552304884 2011 1.3236073722544812 2012 -0.6237751561243149 2013 -5.547221995400396 2014 8.58986964103062 2015 11.421763226877227 2016 10.618716661445216 2017 9.2978535910864 2018 13.08764669964147 2019 6.910111046166658 2020 -0.5590564772133181 2021 8.871941163606975 2022 7.320822785749168 2023 5.9456748995742235