Year annual % 1981 11.4271763230549 1982 8.88571308471459 1983 6.90822881158842 1984 5.99195111048444 1985 4.641880542871926 1986 2.8417800825284196 1987 3.6538043378469798 1988 4.2788817718493295 1989 5.16996495562573 1990 5.4039590921894 1991 5.2954149720184205 1992 4.02893900408648 1993 4.1982601110385005 1994 2.877467000271285 1995 3.75494413677554 1996 2.93120419993445 1997 2.43155133955926 1998 1.95913632274251 1999 2.135108666118585 2000 2.68684736744012 2001 2.626614722981175 2002 2.07408613571643 2003 2.05566329753742 2004 2.1926413357709 2005 2.6223458686021752 2006 2.66631494577069 2007 2.85267248150136 2008 4.6335940911375655 2009 1.58845890753649 2010 2.07814071860787 2011 3.41068341068342 2012 2.66284165508021 2013 1.49150472970343 2014 1.03317212108915 2015 0.3196958568180205 2016 0.443258157565783 2017 1.5873410763407199 2018 1.881108013805965 2019 1.615199887372135 2020 0.598986330824643 2021 2.522645593401895 2022 7.53107834634288 2023 4.97274795936327