NEW YORK — A record high 60 percent of Americans support legalization of marijuana, according to a Gallup poll released three weeks before voters in nine states decide whether to expand legal access to pot. When Gallup first asked about this issue in 1969, 12 percent of Americans supported legalization. By 2000, support had increased to 31 percent and has continued climbing since then, reaching 58 percent last year. Recreational use of marijuana is currently legal in Alaska, Colorado, Oregon, Washington state and the District of Columbia.