Year annual % 1987 4.68598778792504 1988 7.8873239436618 1989 6.41553963494971 1990 7.81919144730547 1991 6.49734555984545 1992 6.21328146355184 1993 4.8875554526350005 1994 5.64990893945512 1995 4.62776659959759 1996 5.52480986015136 1997 3.727657601836325 1998 5.49101180380943 1999 1.983824272341855 2000 1.59196917460972 2001 3.57755452095074 2002 1.8857200024036551 2003 2.28915662650607 2004 3.23751394003321 2005 3.03702332617012 2006 3.93616259929868 2007 3.7640025918160003 2008 8.342086349209556 2009 1.621730140034505 2010 3.057305639624425 2011 5.0214601462073 2012 2.974607798144725 2013 2.58268766141795 2014 2.51087633253706 2015 0.795279630579839 2016 1.27699094497324 2017 1.8003422246862049 2018 2.312603433015595 2019 1.7039786323626451 2020 1.2807336187658775 2021 2.4101929983719996 2022 5.40874375479067 2023 3.67013142377007