Raj Krishna, an Indian economist, coined the term 'Hindu rate of growth' in 1978 to describe India's slow economic growth rate of around 3.5% per year from the 1950s to 1980s. The term was controversial as it suggested cultural rather than economic or policy reasons for the slow growth. A.K. Sen is famous for welfare economics, Kirit Parikh for planning, and Montek Singh Ahluwalia for planning reforms.