How to do a linear multiple regression with multiple correlating independent vars?

Right I am a total newb at stats but I'll try an explain what I'm trying to do.

Im trying to find whether China's Foreign Direct Investment (variable 1) and China's trade (variable 2) has an impact on the Human Development Index (dependent variable) in Ghana. I also have values for other variables like political stability, corruption, government expenditure.

I have a time range from 2000-2013 of data values for all the variables (there are some but few values missing).

The general trend looking at the data is that China's FDI, trade and ghana's political stability (which are all independent variables) are all increasing pretty steadily together , which I think means multicollinearity so my results will be heavily skewed or something. Then how is it possible for me to find out which variable contributes the most?