The latest issue of Israel Affairs (v.17, no. 1) includes an article co-authored by Columbia University Professor Yinon Cohen entitled: "Who went where? Jewish immigration from the Former Soviet Union to Israel, the USA and Germany, 1990-2000" (p.7). Columbia subscribes to Israel Affairs both in print (call number: DS101 .I873, in Lehman Library) and electronically.
Note, of course, that when clicking through to the link for the electronic version, you must be sure to click on the link that includes coverage "to the present."