It was approved 17 years after the legislation was first proposed under the earlier BJP-led NDA Government under Atal Bihari Vajpayee's administration in 2000.[40] Touted to be India's biggest tax reform in 70 years of independence and the most important overall reform in terms of ease of doing business since 1991. GST replaced a slew of indirect taxes with a unified tax structure and was therefore showcased as dramatically reshaping the country's 2.5 trillion dollar economy.[41]