Just finished 12/1/2008 to 12/17/2009 and here's what I found:
Mean: 1973.6 (c. July 1973)
Mode: 1965 (second runner up 1979)
Range: 81 (1928-2009)
I was born in December 1964, so I find it fascinating that the mode is close to my birth year and that the runner up is around the time I entered high school. Update to follow when I get around to incorporating the remaining seven months, but I don't expect the curve will change much.