My data has only 3 columns. These columns are year_2012, year_2010, year_2007. These columns are about measurements performed in various years (2012, 2010, 2007). Rows are countries (~150 countries/rows).
Measurements are all numeric and any value between 1.00 through 5.00. 5 is the best, 1 is the worst.
For instance, how can I extract a group of countries with better/worse progresses from year 2007 to 2012? What else can be done on such data?