Year Years 1950 81.02621 1955 78.86615 1960 77.52489 1965 75.19561 1970 72.41162 1975 68.27437 1980 69.2572 1985 70.64283 1990 72.89576 1995 74.80047 2000 76.88587 2005 80.56734 2010 83.91505 2015 86.40301 2020 88.52421 2025 90.67655 2030 92.64991 2035 93.90155 2040 94.37956 2045 94.15368 2050 93.9721 2055 93.7843 2060 93.72387 2065 93.6201 2070 93.44955 2075 93.35503 2080 93.45073 2085 93.67938 2090 93.91835 2095 93.98088 2100 93.89222