Year annual % 1962 6.489555922895704 1963 30.700427326826343 1964 11.367368395810033 1965 16.612062960610018 1966 1.5279015363898623 1967 4.131448037769147 1968 1.3291078739839008 1969 1.3807636599135975 1970 6.599287886201566 1971 5.483306173529257 1972 2.8867235663544903 1973 8.560803341099358 1974 24.394726086788523 1975 4.994560341617401 1976 2.8975529255676804 1977 9.653309091674515 1978 6.464929990554765 1979 10.387841206722342 1980 12.798762445801131 1981 11.410748009476748 1982 16.007660517041472 1983 12.700716400581683 1984 6.981202748169096 1985 3.5971210413988643 1986 3.5226678476433904 1987 5.170711479827688 1988 7.704193959245401 1989 8.829283307305033 1990 4.476504477707223 1991 7.036802089045864 1992 5.691544864963575 1993 4.691343371717409 1994 4.526057666385739 1995 5.3510954461247024 1996 4.356595249080144 1997 14.125336532737137 1998 3.271675976479017 1999 3.3614189577862703 2000 3.283579411528862 2001 3.9135776455732127 2002 2.2848028326208407 2003 2.684756267399166 2004 3.3516094601244077 2005 4.1758360767102545 2006 3.833826386590218 2007 2.12647656280636 2008 6.3403242522970515 2009 3.023044970584948 2010 9.465024549001512 2011 4.571114060390286 2012 4.661810781030539 2013 4.500270189790385 2014 4.66466047449812 2015 4.213840076420098 2016 4.934963601104812 2017 4.713885693893772 2018 7.924854711765917 2019 7.134761210229598 2020 6.315167245067485 2021 4.6477159422306755 2022 3.124618444342204 2023 8.470738526550363