9. Suppose in an economy Emmaland, the Beveridge curve can be described as v = p β − u 2 , where u is the unemployment rate, v is the vacancy rate, β is a parameter. Note that 0 < u < 1, 0 < v < 1, and β > 0. In Year 0, the vacancy rate and unemployment rate in Emmaland were both 5%. In Year 1, the vaccancy rate increases to 6% and the number of employed workers is 962,583. What is the size of labor force in Year 1? (10 marks)