Year Years 1950 131.48032 1955 128.82119 1960 130.00693 1965 141.58243 1970 134.39941 1975 149.49889 1980 171.71688 1985 155.13387 1990 159.44149 1995 156.22327 2000 150.10772 2005 174.61915 2010 192.29956 2015 187.77741 2020 221.40853 2025 218.61789 2030 206.0879 2035 190.87848 2040 187.87311 2045 197.45521 2050 196.25861 2055 191.84606 2060 182.44468 2065 169.87419 2070 159.65796 2075 154.81115 2080 152.95387 2085 151.18057 2090 149.08724 2095 146.66169 2100 144.04126