Sources and Citations:
http://books.google.com/books?id=NGUS0Mov8BgC&pg=PA94&lpg=PA94&dq=table+2+men's+olympic+pole+vault+records&source=bl&ots=3TRlVyjNED&sig=VZFNS_zP3g0qoX2VDlIqK5PKIgI&hl=en&sa=X&ei=CAoKU-zdOIWbygGa64HYBg&ved=0CC0Q6AEwBA
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