Figure 1: Moran’s I in the residuals of the OLS regression (1970s Period). Note: all Moran’s I statistics at the state level are not statistically significant at the 1% level. Moran’s statistics using distance cut-offs of 900, 1,000, 1,500, and 2,000 kilometres at the meso-regional level are not statistically significant at the 1% level.