The table below offers four years of data from the nation of Gurpriya, Y=Real GDP K=Capital Stock N=Labor (1960 [223 235 [59 | 11980 |577 1498 111 | 1e production function for Gurpriya is given by: Y = AK93NO-Z, (a) How much did total factor productivity grow between: (i) 1960 and 19707 (2 points) (i) 1970 and 19807 (2 points) (i11) 1980 and 1990? (2 points) (b) Describe the change in marginal productivity of labour from 1960 to 1990? (4 points)