Today, we spent our time on researching countries in CIA world factbook. One of the interesting fact I found is that population pyramid of Qatar looks really strange. From 15-24 years, males are 2.75 times as many as females. From 25-54, males even are 4.8 times as many as females. That's because a lot of people especially males coming from all over the world to Qatar for business. Qatar is a country in Middle East which is rich for adequate oil resource. It caused that Qatar has second biggest net immigration rate which is 27.35. China has second highest total GDP in the world. Because China has the 1.3 billion people in the world, personal GDP is not relatively high.That's why China is still developing country with high total GDP. But we have to admit that China develop a lot these year. As Chinese, I'm very proud of my country.