natural increase = birth rate-death rate. The rate of natural increase is given as a percentage, calculated by dividing the natural increase by 10. For example, if the birth rate is 14 per 1,000 population, and the death rate is 8 per 1000 population, then the natural increase = 14 - 8 = 6.
Patty Duke Has Died. Former child star, Oscar winner, cult movie idol and overall Hollywood legend Patty Duke died early this morning. She was 69. Patty Dukeâs son Sean Astin (aka Samwise in The Lord of the Rings movies) confirmed the sad news on Facebook by posting a statement from his family. Patty Duke (born name: Anna Marie Duke) died from sepsis from a ruptured intestine.
TV Actress who played Patty Duke's mom dies at 80. Associated Press February 6, 2006. Mobile, Ala. -- Jean Byron, an actress who played Patty Duke's mother in the 1960s television series and appeared in dozens of TV shows over three decades, has died at age 80.