Year | Value | 2022 | 0.28486095968839 | 2021 | 0.21235880761105 | 2020 | 0.085769475614987 | 2019 | 0.13532807284087 | 2018 | 0.13850815961133 | 2017 | 0.15517899568741 | 2016 | 0.12892232995691 | 2015 | 0.095033878648276 | 2014 | 0.097045421583488 | 2013 | 0.10745800949237 | 2012 | 0.17018385532607 | 2011 | 0.1289364627238 | 2010 | 0.093191273189984 | 2009 | 0.13325732102767 | 2008 | 0.085755299519591 | 2007 | 0.029178401193437 | 2006 | 0.0045971188356826 | 2005 | 0.0098091341730871 | 2004 | 0.020361720259736 | 2003 | 0.065821507032207 | 2002 | 0.036352550968734 | 2001 | 0.18301227099618 | 2000 | 0.13537648779442 | 1999 | 0.10205316104624 | 1998 | 0.13412159848536 | 1997 | 0.18462999120546 | 1996 | 0.21167439643171 | 1995 | 0.29263220653253 | 1994 | 0.39405443003197 | 1993 | 0.38171988665112 | 1992 | 0.032465114898128 | 1991 | 0.077472436978058 | 1990 | 0.43961709472628 | 1989 | 0.48156476482777 | 1988 | 0.53002787201779 | 1987 | 0.55683923298189 | 1986 | 0.61937664535256 | 1985 | 0.67395443975309 | 1984 | 0.68746265978903 | 1983 | 0.726754862038 | 1982 | 0.77437007245116 | 1981 | 0.72609943737232 | 1980 | 0.82353269022753 | 1979 | 0.99395493176258 | 1978 | 1.0199637764061 | 1977 | 1.0590744398024 | 1976 | 1.0579184057058 | 1975 | 1.0496103881186 | 1974 | 1.0326455261866 | 1973 | 0.97040542665407 | 1972 | 0.85586487410374 | 1971 | 0.42275114216251 | 1970 | 0.4331765236443 | 1969 | 0.77072117632032 | 1968 | 0.77347098721666 | 1967 | 0.8509442972572 | 1966 | 0.926446929305 | 1965 | 1.0034660977957 | 1964 | 1.0529105358431 | 1963 | 1.0288340857401 | 1962 | 1.1037312569083 | 1961 | 2.99236759279 |
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