How to draw graph in X-Y proportion for trend analysis

use X-Y (Scatter) in Excel
http://www.google.com.hk/url?sa=t&source=web&cd=2&ved=0CCgQFjAB&url=http%3A%2F%2Ffaculty.fuqua.duke.edu%2F~pecklund%2FExcelReview%2F2001_Documents%2F2001XLScatterPlotMono.pdf&ei=hehsTKvWFJbauAOf3OX7DA&usg=AFQjCNFkh2IPsW6YOI7GW3dASb0D83PqIA