Year | Value | 2022 | 0.69088561603172 | 2021 | 0.76397459233335 | 2020 | 0.91119636526429 | 2019 | 1.0546114526386 | 2018 | 1.0938833327033 | 2017 | 1.063706810553 | 2016 | 1.0410813400546 | 2015 | 1.0458019990959 | 2014 | 1.0654798945717 | 2013 | 1.0915485774248 | 2012 | 1.1277305421247 | 2011 | 1.1411560631017 | 2010 | 1.0515594835995 | 2009 | 1.1036553119851 | 2008 | 1.1268911535645 | 2007 | 1.1648088829147 | 2006 | 1.2034512168322 | 2005 | 1.2469311922396 | 2004 | 1.2772431430297 | 2003 | 1.3161009800282 | 2002 | 1.3766352116082 | 2001 | 1.4294962967849 | 2000 | 1.4818479531463 | 1999 | 1.5307664128212 | 1998 | 1.5750232220686 | 1997 | 1.6145202981433 | 1996 | 1.6563986088772 | 1995 | 1.7077696456942 | 1994 | 1.7467191217258 | 1993 | 1.7795262945866 | 1992 | 1.8195612401294 | 1991 | 1.8772422242519 | 1990 | 1.9013187201756 | 1989 | 1.9051059258857 | 1988 | 1.9387231150876 | 1987 | 1.9667275787059 | 1986 | 2.010877039952 | 1985 | 2.0628718201597 | 1984 | 2.1142559070194 | 1983 | 2.1507808594486 | 1982 | 2.1588449628702 | 1981 | 2.2093755199341 | 1980 | 2.3014936106245 | 1979 | 2.3581387625897 | 1978 | 2.3874852562119 | 1977 | 2.3817322524345 | 1976 | 2.3805801059347 | 1975 | 2.4137398168243 | 1974 | 2.4473222172627 | 1973 | 2.4728438481903 | 1972 | 2.4927311770252 | 1971 | 2.5172198193119 | 1970 | 2.5523908694926 | 1969 | 2.5941821491814 | 1968 | 2.6404728704832 | 1967 | 2.6906802388767 | 1966 | 2.7432506660634 | 1965 | 2.7920450063089 | 1964 | 2.8206723215361 | 1963 | 2.8376455713765 | 1962 | 2.8457746080956 | 1961 | 2.8450369078063 |
|