The Nobel Peace Prize was not awarded in the following years: 1914–1918, 1923, 1924, 1928, 1932, 1939–1943, 1948, 1955–1956, 1966–1967, and 1972. The primary reasons for not awarding the prize in these years were the disruptions of the World Wars, and other years when no sufficiently important candidates were found for the award.