Consider the following statements regarding Padma awards in India.
1. Bharat Ratna and Padma Vibhushan were instituted in 1954.
2. A formal recommendation should be submitted to the President by the Cabinet for Bharat Ratna.
3. These awards were discontinued by the Janata Party government in 1977.
4. The Padma Awards Committee is headed by the Prime Minister.
How many statements given above are correct?