A year after Piłsudski's death, his former personal assistant General stagnation. There was little money for investment inside Poland, and few foreigners were interested in investing there.[81] Total industrial production barely increased between 1913 and 1939 (within the area delimited by the 1939 borders), but because of population growth (from 26.3 million in 1919 to 34.8 million in 1939),[81] the per capita output actually decreased by 18%.[125]