I googled "64 percent of drownings": http://www.polity.org.za/article.php?a_id=97173 "64 percent of drownings in South Africa occurs in rivers and dams with an estimated 94 percent of those who have drowned in such instances being Black people.". Seems a bit clearer. Also "64 percent of drownings in children 14 and younger…
Well you have 64 to beat - Oscar Swahn was a member of the winning Running Deer shooting team at the 1912 Stockholm Olympics. He was 64-years and 258-days old