The last accurate census of the population of Cyprus with regard to its ethnic breakdown was carried out in 1960; it recorded 3,628 Armenians in Cyprus . In 1978 and 1987 the Armenian Prelature recorded the Armenian population of Cyprus, which was 1,787 and 2,742, respectively . Since then, their number has increased; currently, about 3,500 Armenians live in Cyprus: 65% live in the capital, Nicosia, 20% in Larnaca, 10% in Limassol and 5% in Paphos and some villages. Over 95% of the Armenian population of Cyprus speak Armenian and are Armenian Orthodox ; some 5% belong either to the Armenian Evangelical Church, the Armenian Catholic Church, the Latin Church, the Greek Orthodox Church, the Anglican Church, the Plymouth Brethren Church, the Seventh-day Adventist Church or they are Jehovah's Witnesses. About 1,000 out of the 3,500 Armenians who live in Cyprus hail from Armenia, Lebanon, Syria, Russia, Georgia, Persia, Greece, Iraq, Ethiopia, Turkey and Kuwait. Most of the first wave of Armenians from Armenia who arrived in Cyprus from 1988 onwards were in fact the Armenian-Cypriots and their descendants who emigrated to Armenia between 1962-1964, as part of the nerkaght  Panarmenian movement.
Question: How many years did Armenians migrate as part of the nerkaght  Panarmenian movement?
Answer: 2