1975 331.81 1975.08 332.39 1975.17 333.5 1975.25 335.12 1975.33 335.26 1975.42 334.62 1975.5 332.95 1975.58 330.96 1975.67 329.48 1975.75 329.14 1975.83 330.56 1975.92 332.02 1976 333.13 1976.08 333.83 1976.17 334.93 1976.25 335.89 1976.33 337.07 1976.42 336.23 1976.5 334.88 1976.58 333.04 1976.67 331.67 1976.75 331.37 1976.83 332.85 1976.92 333.87 1977 334.82 1977.08 335.23 1977.17 336.24 1977.25 337.9 1977.33 338.18 1977.42 337.5 1977.5 336.6 1977.58 334.51 1977.67 332.77 1977.75 333.08 1977.83 334.3 1977.92 335.24 1978 336.12 1978.08 336.78 1978.17 338.13 1978.25 339.08 1978.33 339.72 1978.42 339.62 1978.5 337.94 1978.58 336.5 1978.67 334.14 1978.75 333.69 1978.83 335.63 1978.92 336.69 1979 337.96 1979.08 338.64 1979.17 340.16 1979.25 340.99 1979.33 341.9 1979.42 341.19 1979.5 339.41 1979.58 337.44 1979.67 335.49 1979.75 336.15 1979.83 337.27 1979.92 337.82 1980 339.29 1980.08 340.3 1980.17 341.38 1980.25 343.04 1980.33 343.29 1980.42 342.52 1980.5 340.39 1980.58 338.46 1980.67 336.86 1980.75 337.05 1980.83 338.61 1980.92 339.94 1981 340.95 1981.08 342.02 1981.17 342.93 1981.25 343.38 1981.33 344.46 1981.42 343.31 1981.5 342 1981.58 340.1 1981.67 338.06 1981.75 338.08 1981.83 339.7 1981.92 340.51 1982 341.22 1982.08 342.36 1982.17 342.7 1982.25 345.08 1982.33 345.92 1982.42 344.92 1982.5 344.04 1982.58 342.22 1982.67 339.86 1982.75 340.53 1982.83 341.53 1982.92 343.27 1983 343.59 1983.08 344.52 1983.17 345.45 1983.25 347.25 1983.33 347.67 1983.42 347.11 1983.5 345.6 1983.58 343.69 1983.67 341.3 1983.75 341.16 1983.83 343.3 1983.92 344.17 1984 344.91 1984.08 346.27 1984.17 347.51 1984.25 348.56 1984.33 349.36 1984.42 348.26 1984.5 346.4 1984.58 344.53 1984.67 342.69 1984.75 342.94 1984.83 344.4 1984.92 345.16 1985 346.35 1985.08 346.79 1985.17 347.86 1985.25 350.09 1985.33 350.59 1985.42 349.83 1985.5 347.85 1985.58 345.94 1985.67 345.04 1985.75 344.38 1985.83 345.92 1985.92 347.25 1986 348.24 1986.08 348.9 1986.17 349.66 1986.25 350.83 1986.33 352.2 1986.42 351.24 1986.5 349.49 1986.58 348.42 1986.67 346.57 1986.75 346.61 1986.83 348.29 1986.92 349.01 1987 350.31 1987.08 351.59 1987.17 351.85 1987.25 353.76 1987.33 354.42 1987.42 353.44 1987.5 352.48 1987.58 350.3 1987.67 348.75 1987.75 349.45 1987.83 350.48 1987.92 351.66 1988 352.69 1988.08 353.12 1988.17 353.88 1988.25 355.64 1988.33 355.94 1988.42 355.47 1988.5 354.12 1988.58 352.09 1988.67 350.03 1988.75 349.81 1988.83 351.62 1988.92 352.48 1989 353.59 1989.08 354.96 1989.17 355.44 1989.25 356.37 1989.33 357.55 1989.42 356.18 1989.5 354.6 1989.58 352.69 1989.67 350.49 1989.75 351.23 1989.83 352.89 1989.92 353.69