Year annual % 1981 13.144340281225084 1982 12.99767937512351 1983 6.9501205419881416 1984 10.922317627739474 1985 9.409189220025496 1986 5.09796961147002 1987 11.494256924560744 1988 16.81204535284253 1989 3.453639750954224 1990 34.10693906572877 1991 7.245674420120167 1992 13.157052604032842 1993 17.018613255050425 1994 27.937088494888812 1995 9.538819278483473 1996 12.083891719911605 1997 8.473222442212986 1998 11.152682090439583 1999 7.674579221424139 2000 5.559063794430045 2001 9.90700224559815 2002 11.279103555301305 2003 25.887081325784195 2004 3.762837175502213 2005 10.699306114641786 2006 8.343721126029521 2007 9.29434531558914 2008 6.429162146777358 2009 4.873126919258382 2010 1.7452779033142463 2011 4.476827888738555 2012 4.65219263177319 2013 2.352274337537196 2014 3.670275579183894 2015 3.357772959564656 2016 0.3449424280615858 2017 2.5766856785920993 2018 7.857874382978508 2019 1.2413030324181875 2020 -1.3259173205171777 2021 -5.504745457506004 2022 2.0166120715476694 2023 3.8904067532897812