Year, Factor_1, Factor_2, Factor 3,Factor 4, Type
2002,15,,,,Employer
2003,25,,,,Employer
2004,30,,,,Employer
2005,30 ,30,30,30,Employer
2006, ,50,60,70,Employer
2007,,60,80,100,Employer
2002,4, ,,,Employee
2003,14,,,,Employee
2004,15,,,,Employee
2005,30 ,30,30,30,Employee
2006,,50,60,70,Employee
2007,,60,80,100,Employee