Class1956 1964 New England 44.0% 30.9% (Massachusetts 35.8 21.0) Mid-Atlantis 27.7 27.6 Southern 5.6 8.3 Northwestern Territory 12.4 16.9 Central 2.9 3.9 Mountain 1.9 2.5 Pacific 2.9 6.3 Territories 6 .3 Foreign 2.0 2.9
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