Arrange the following countries in ascending order of GDP per capita.
China, US, India, Japan
According to the International Monetary Fund's 2020 estimates, The countries arranged in ascending order of GDP per capita:
- India
- China
- Japan
- United States
Complete the following task based on the instruction and optional input provided.### Instruction:
Arrange the following countries in ascending order of GDP per capita.

### Input:
China, US, India, Japan

### Output:
According to the International Monetary Fund's 2020 estimates, The countries arranged in ascending order of GDP per capita:
- India
- China
- Japan
- United States