How many times in the last 100 years has Easter fallen on March 29th?

In the 20th century, Easter Sunday was on the 31st of March 4 times: 1907, 1918, 1929 and 1991.

In the past 100 years, it has also been on the 31st of March 4 times: 1918, 1929, 1991 and 2002.