As countries become more and more developed, the size of their shadow economy relative to GNI tends to shrink. Given this fact, the failure by GNI to fully count economic activity in the shadow economy is likely to... As countries become more and more developed, the size of their shadow economy relative to GNI tends to shrink. Given this fact, the failure by GNI to fully count economic activity in the shadow economy is likely to... not create any problems since all shadow economy activity is illegal and shouldn't be counted cause us to overestimate economic growth rates lead us to compute GNI as smaller than GDP cause us to overestimate the standard of living in a country measured at a given point in time