Year annual % 1987 3.299968371890259 1988 13.200030055759427 1989 2.789750938834132 1990 5.702796633117259 1991 -7.943925237797927 1992 -13.837837798437889 1993 -15.459328224251209 1994 -20.085158839324322 1995 -5.423821922260203 1996 7.0845023953655755 1997 9.915253895509451 1998 2.121835284736818 1999 3.655789399748002 2000 5.4433366328832165 2001 5.321621411904658 2002 -0.017324613036066694 2003 7.0302931973116785 2004 7.026812424976072 2005 -0.17551540404421928 2006 3.102898741999809 2007 8.542874775076072 2008 8.401616048614287 2009 2.886294575377306 2010 -0.47156659679161805 2011 5.956274296935035 2012 -0.08815019984393757 2013 10.915469452804544 2014 4.024038630832521 2015 3.8758254451243914 2016 4.335855921901157 2017 4.739937223778838 2018 3.757910135571649 2019 4.60062565707598 2020 -7.1489775772795525 2021 5.507007626719229 2022 8.96750520041391 2023 6.151391837160318