Agro-based industries rely on agricultural products as raw materials. Cotton textile industries use cotton from agriculture. Sugar industries process sugar cane. Chief sugar cane producing states in Northern India are Uttar Pradesh and Bihar, which produced 60% and 30% of total sugar respectively in 1960-61 and today. The cotton textile industry occupies a unique position in India's economy, contributing nearly a third of export earnings. It provides vast employment opportunities across the country. Major cotton textile centers are in Maharashtra, Gujarat, Tamil Nadu and West Bengal.