In the 1960s, Ireland underwent a major economic change under reforming Taoiseach (prime minister) Seán Lemass and Secretary of the Department of Finance T.K. Whitaker, who produced a series of economic plans. Free second-level education was introduced by Donogh O'Malley as Minister for Education in 1968. From the early 1960s, Ireland sought admission to the European Economic Community but, because 90% of exports were to the United Kingdom market, it did not do so until the UK did, in 1973.