Year annual % 1981 1.4151885952952625 1982 -1.8947292224333552 1983 -2.3544762778934967 1984 1.21197622639815 1985 0.35352981098193936 1986 6.493671469045921 1987 11.093174778227066 1988 9.986497187742756 1989 12.260663236930938 1990 10.304211086838961 1991 11.720585247224193 1992 12.072544698940419 1993 5.744250313491861 1994 -1.1234347107836982 1995 1.3925505008608638 1996 0.7155868228687439 1997 5.098074841339326 1998 2.899690727979859 1999 8.72389204396427 2000 11.416555296616721 2001 3.7406050362014582 2002 5.852380147736525 2003 8.400766480060184 2004 3.2280631262041766 2005 2.905066499110575 2006 4.429214148328356 2007 1.6166219449666528 2008 -1.7428744592484122 2009 4.238302452223678 2010 -1.448356723927219 2011 2.2974432205181046 2012 2.568216350030795 2013 4.993540465117391 2014 3.336817973142985 2015 5.497996974643769 2016 -0.7342185074618754 2017 -2.5451162127922515 2018 -0.32741134763062973 2019 4.192793597738827 2020 -9.854661845923573 2021 17.533873260893444 2022 7.094561817950648 2023 5.792231826556858