What is the ratio of total imports to the total exports for all the given years together?

Total import = 35 + 30 + 40 + 50 + 55 + 60 + 45 = Rs. 315 crores
Total export = 40 + 55 + 35 + 40 + 60 + 50 + 55 = Rs. 335 crores
Since, their ratio = 315 : 335 = 63 : 65