New Delhi: Mughal-era mausoleum Taj Mahal was the top earning ASI-protected monument through ticket sales in the last five years, according to data shared by the government. Union Culture Minister Gajendra Singh Shekhawat shared the data in a written response to a query in the Rajya Sabha on Thursday. He was asked the amount that the Archaeological Survey of India (ASI) has received from selling entry tickets to various monuments in the last five years, year-wise and monument-wise; and the monuments that have received the highest income through sale of entry tickets in the last five years.