研究正式制度距离等所需数据：worldwide governance indicators 六维度数据，更新于2021年，涵盖1996-2020年数据。
具体数据维度包含：
Voice and Accountability

Political Stability and Absence of Violence/Terrorism

Government Effectiveness

Regulatory Quality

Rule of Law

Control of Corruption

数据库说明：

The Worldwide Governance Indicators (WGI) are a research dataset summarizing the views on the quality of governance provided by a large number of enterprise, citizen and expert survey respondents in industrial and developing countries. These data are gathered from a number of survey institutes, think tanks, non-governmental organizations, international organizations, and private sector firms. The WGI do not reflect the official views of the World Bank, its Executive Directors, or the countries they represent. The WGI are not used by the World Bank Group to allocate resources.