Petrol and Diesel prices in India and other countries

                                                               PRICE(INR)

                                  PETROL                                             DIESEL

India                            70.50                                                     47.00
USA                            42.80                                                     45.84

WHY IS PETROL PRICE HIGHER in INDIA?

Indians pay almost double the price for 1 litre petrol if compared with neighboring countries like pakistan, srilanka, and also some of the developed countries like USA! 

But the question that arises is WHY?