The first step in our study is to study the unit root properties of the variables. The results of the augmented Dickey-Fuller (ADF) unit root tests (see Dickey and Fuller (1979) and (1991)) for the variables in their levels and in their first differences are given in Tables 1 - 2. Table 1 gives the results for without trend and Table 2 gives the results for with trend. The results unequivocally show that all variables have unit roots in their level forms. The tables also show that all variables except log( g/y ) are stationary in their first differences. The next step, therefore, is to proceed with the Johansen multivariate cointegration tests (see Johansen (1988) and Johansen and Juselius (1990)) for the pairs of variables which do not involve log( ). The results of maximal eigenvalue tests are in Table 3. The results of trace tests are in Table 4. The Johansen cointegration tests are sensitive to the lags used. The lags to be used were decided by using the Akaike Information Criterion (AIC) and Schwarz Bayesian Criterion (SBC). Both the criteria yielded the same results. In each case, the optimal lag turned out to be one. The Tables 3 and 4 both indicate that all four pairs of variables are cointegrated and the number of cointegrating vectors is equal to one in each case. Table 5 gives the estimates of the vectors. As expected, we find that all pairs of variables have a long run positive relationship.