*4.1. Entropy Index of Economic Diversification*

This study calculated the entropy index of economic diversification based on the chain volume measures of the total added value (producer price) of 16 industries in Macao in 2015. Table 1 and Figure 1 illustrate the results of the revealed relevant calculation.


**Table 1.** Macao entropy index of economic diversification.

Comment: results were calculated by the chain price (2015) of the main industries' total added value (producer's price). Data source: Statistics and Census Service of the Government of Macao Special Administrative Region.

**Figure 1.** Macao entropy index of economic diversification.

According to the results, Macao's industrial diversification continuously decreased from 2008 to 2013, while Macao's gambling industry developed rapidly after it opened. However, it started to change in 2014. In 2015, the gross income of the gambling industry had declined by 34.3%, which resulted in a rise in the entropy index of economic diversification calculated by the industrial added value. Therefore, once industrial concentration shows a slight decline, the industrial structure is more diversified.
