Analysis of information sources in references of the Wikipedia article "基督教" in Chinese language version.
17% of the world's population is Catholic. There are 43,800 Catholic secondary schools worldwide. There are 5,200 Catholic hospitals worldwide. There are 1.2 billion Catholics on Earth. There are 221,700 Catholic parishes worldwide. There are 3,600 Catholic abbys （原文如此） and monasteries worldwide. There are 95,200 Catholic elementary schools worldwide. There are 10,100 Catholic orphanages worldwide. It is estimated that the Catholic Church controls 177,000,000 acres of land.
