Table 2.

Descriptive statistics of external environmental variables.

Variables	Definition	Mean	SD
GDP per capita	The amount of GDP divided by midyear population (US$)	15,182.08	13,788.06
Government support	The proportion of general government final consumption expenditure in GDP (%)	16.99	4.24
Industry structure	The proportion of industry value added in GDP (%)	33.49	9.66
Import and exports	The proportion of exports and imports in GDP (%)	48.82	22.07
Urbanization rate	The proportion of urban population in total (%)	69.53	17.40

Note: all data are obtained from “World Bank Data”. Gross Domestic Product (GDP) per capita, Government support, Industry structure, Import and exports, and Urbanization refers to the indicators of GDP per capita (current US$), General government final consumption expenditure (% of GDP), Industry value added (% of GDP), Merchandise trade (% of GDP), and Urban population (% of total) in World Bank Data, respectively.