 However, they began to show up in large numbers during the second wave; between 1965 and 1973, one hundred thousand Turks and Moroccans came to the Netherlands, and a further 170,000 from 1974 to 1986.Earlier arrivals consisted of "guest workers", whose recruitment and admission was governed by a bilateral treaty signed in 1969.From the 1970s, the number arriving under family reunification schemes became more significant.