Year | Value | 2021 | 156.00427039189 | 2020 | 154.21732558139 | 2019 | 166.46865079365 | 2018 | 152.10342205323 | 2017 | 155.69276422764 | 2016 | 154.16501132297 | 2015 | 149.16033747084 | 2014 | 160.18465399422 | 2013 | 149.94766101496 | 2012 | 152.32116882379 | 2011 | 155.33100587763 | 2010 | 152.13156157011 | 2009 | 157.44719321887 | 2008 | 157.95755005917 | 2007 | 154.95042760917 | 2006 | 162.00236351713 | 1992 | 87.124615384615 | 1991 | 86.496721311475 | 1990 | 84.116363636364 | 1989 | 83.257142857143 | 1988 | 75.152631578947 | 1987 | 81.082352941176 | 1986 | 84.102127659575 | 1985 | 84.123913043478 | 1984 | 75.566666666667 | 1983 | 87.166666666667 | 1982 | 87.86 | 1981 | 100.41315789474 | 1980 | 100.62702702703 | 1979 | 86.621380612673 | 1978 | 70.6 | 1977 | 76.000915777123 | 1976 | 72.702140309156 | 1975 | 55.412695772037 | 1974 | 48.399561523705 | 1973 | 77.301358769009 | 1972 | 84.303060966355 |
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