Year annual % 1990 18.547900299178 1991 64.7746866232908 1992 19.7288531343743 1993 10.4355721703213 1994 15.6704773391234 1995 21.2362437856018 1996 15.0750668353899 1997 14.6798929254666 1998 11.938194929588 1999 11.0294713554238 2000 9.38971354904071 2001 9.72093790592623 2002 9.78688628402089 2003 10.6482369899355 2004 13.3503494295112 2005 13.0133254437489 2006 12.9843104895786 2007 10.516785943754 2008 11.423785789757 2009 9.70133091343581 2010 6.62884491215073 2011 4.5932251422024 2012 4.73363296842541 2013 4.59021167268916 2014 6.20692042541053 2015 3.95521539612993 2016 1.95876479850916 2017 2.85888372957956 2018 2.1924784282276 2019 2.56679211775625 2020 0.772593246751626 2021 2.37413082554063 2022 6.28038513680281 2023 -0.087922596921004