Former Prime Ministers of Singapore, Lee Kuan Yew and Goh Chok Tong, have stated that Singapore does not fit the traditional description of a nation, calling it a society-in-transition, pointing out the fact that Singaporeans do not all speak the same language, share the same religion, or have the same customs.[233][236] Even though English is the first language of the nation, according to the government's 2010 census 20% of Singaporeans, or one in five, are illiterate in English. This is a marked improvement from 1990 where 40% of Singaporeans were illiterate in English