Year % 1976 6.262932108544225 1977 4.604205531242449 1978 1.1686571335864546 1979 3.969564125780183 1980 3.055257042760926 1981 8.153283417577747 1982 11.327547787250522 1983 11.152215960743783 1984 15.1248129759168 1985 13.609817248056645 1986 11.531215788535015 1987 6.510928116878153 1988 5.34839741634138 1989 5.779725926844662 1990 8.17171642898056 1991 9.124942557831407 1992 7.346329001278588 1993 4.391006806907609 1994 5.945261762473633 1995 7.102087273599624 1996 8.931660380268015 1997 8.834094763855607 1998 5.878898829987916 1999 11.861792458234632 2000 6.416871607097179 2001 5.252581151138585 2004 0.9499225316878595 2005 -0.3541731972735381 2006 1.1127946017569397 2007 3.4869856870278477 2008 0.6545068948919859 2009 4.572319804974013 2010 0.24312863861146236 2011 1.2766820317925012 2012 3.2167571246918256 2013 3.2243349821082106 2014 3.4578431711481374 2015 3.9810139730984275 2016 1.7851191699727542 2017 2.469714624088516 2018 2.6797972891576936 2019 3.0389157871948527 2020 4.6516900475010505 2021 1.2664971566865264 2022 -1.5545567969982312 2023 3.0288917853983035