He also introduced a new curricula and textbooks for universities and schools after building many public-sector universities and schools were built during his era. He also introduced agricultural reforms according to which no one could occupy land more than 12.5 acres (500 irrigated land and 1000 unirrigated.) An oil refinery was established in Karachi, and these reforms led to 15% GNP growth of the country that was three times greater than that of India. Despite the increase in the GNP growth, the profit and revenue was gained by the famous 22 families of the time that controlled 66% of the industries and land of the country and 80% of the banking and insurance companies of Pakistan.