Investigations carried out by CBI since independence have failed to bring down the level of corruption in India even by 1%. These investigations usually take decades on. On the contrary the level of corruption in India has increased over a thousandfold during the last 5 decades! Top level corrupt officials like income tax commissioners, excise commissioners demand and receive more than a crore of rupees in each bribe taking opportunity!!! Naturally these posts are auctioned/sold for several crores of rupees by the concerned absolutely corrupt ministers and bureaucrats !!!!!!