Selecting the right value

Consider the following timeline that you are using to construct a predictive model. A certain donor in the population has changed his living place several times.

• Initial living place: USA
• March 2nd 2015: changed living place to Germany
• August 15th 2017: changed living place to Belgium
• April 26th 2018: changed living place to India

Which living place should be used as predictive variable?