Year annual % 1990 18.5395953745488 1991 23.7488447345808 1992 21.7454653950544 1993 36.2494284375746 1994 22.0801504946047 1995 19.6008436274624 1996 23.0374930881772 1997 33.7942244584017 1998 35.8252397603861 1999 22.6404900460789 2000 2.46177398804086 2001 24.8444647782488 2002 41.5089280021532 2003 20.4965394080297 2004 3.60112807911594 2005 19.1635299038814 2006 21.3004988066612 2007 23.6439081182201 2008 13.6186579473021 2009 4.87859924627352 2010 7.04321189366061 2011 10.2545766682247 2012 3.13009695263828 2013 4.37807084310651 2014 3.91022519271547 2015 4.13669673912931 2016 3.61567809530786 2017 5.8734089465466 2018 5.34109463991011 2019 5.42293300468495 2020 5.34411000806585 2021 19.517209372101 2022 6.16371648905898 2023 7.5172072555781