Year annual % 1961 4.014434555515614 1962 2.0915622928210524 1963 3.174916400735455 1964 3.0262739690583658 1965 2.0576204636815874 1966 3.20586501399589 1967 0.9507382701398015 1968 1.6788408490153301 1969 3.8643468368338034 1970 4.3529690464306725 1971 3.3774753255691365 1972 4.974395468174194 1973 8.754114813836878 1974 14.920709907590421 1975 8.868739630671229 1976 11.693191005241516 1977 11.030222179461191 1978 8.562151174611628 1979 11.326522789661425 1980 12.419662241744888 1981 10.853077267915708 1982 11.59255375129132 1983 12.300554709240338 1984 12.441724720410285 1985 9.587877902025866 1986 5.56544143367028 1987 9.858735353743441 1988 7.7067880749221445 1989 9.39289887253588 1990 10.494862790372117 1991 8.540182896623747 1992 9.509183811298527 1993 7.742645675799054 1994 26.171881312568004 1995 11.084210360361908 1996 9.074834888785134 1997 4.9645176820283865 1998 6.209969541968803 1999 7.18914294704696 2000 8.506601078345597 2001 5.419569938019464 2002 4.376396634504843 2003 6.2383933082751 2004 10.3358984754585 2005 8.10428690011478 2006 7.330547916290826 2007 6.888389103197554 2008 9.116999675010078 2009 1.8621318930236868 2010 6.512003689056684 2011 10.065012967231553 2012 5.823999487959156 2013 3.5869058261315416 2014 1.2686434400342108 2015 2.863665122989431 2016 2.9801140844553373 2017 4.6490508196250175 2018 3.7951186208404692 2019 3.0000118163171265 2020 2.7214844414999106 2021 5.906707663278226 2022 8.330903988542886 2023 5.954462624156449