domestic producers on foreign markets and their trade orientation. However, it should be noted that a simple ratio
indicator, especially if it represents the whole economy of the country (total exports to GDP ratio) should be treated
with great caution, because it reflects not only the actual volume, but also the price changes and it does not reflect
the relation of imports to exports. Maddison (1995) measures the degree of trade integration by the ratio of
merchandise exports to GDP at constant prices. By opinion of Sutcliffe and Glyn (2003), such constant price
comparisons exagerate changes in weight of exports in the economy. and suggest to use the share of exports at
current prices, which better reflects productivity gains and thus the share of resources devoted to exporting activity.