The term "K-pop" became popular since the 2000s. Previously, South Korean pop music was called "Gayo" (가요). While "K-pop" is a general term for popular music in South Korea, it is often used in a narrower sense for the genre described here. In 2018, K-pop experienced significant growth and became a 'power player', marking a 17.9% increase in revenue growth. As of 2019, K-pop is ranked at number six among the top ten music markets worldwide according to the International Federation of the Phonographic Industry's "Global Music Report 2019", with BTS and Blackpink cited as artists leading the market growth. In 2020, K-pop experienced a record-breaking year when it experienced a 44.8% growth and positioned itself as the fastest-growing major market of the year.