According to the 2010 U.S. census, less than 0.02% of Americans live to be centenarians. Actress Patricia Morison joined that exceptionally rare group last month when she turned 100.“I had a party with dear friends, that was all I wanted,” Ms. Morison said from her Los Angeles apartment. “I even sang a couple of songs.”Morison, a mezzo-soprano, is best known for her stage work, especially her role in Cole Porter’s hit musical “Kiss me, Kate” which ran for over 1,000 performances on Broadway from 1948-1951.Yet, while she started theater in the ‘30s, Hollywood never took advantage of her voice when she moved to the West Coast to work in film.