During the 1980s, many Japanese corporations relied on investments to bolster dwindling profits, particularly in its exports which had been eroded by a strong yen. Toshiro Shimoyama, Olympus president from 1984 to 1993, admitted to the Nikkei industrial daily newspaper in 1986: "When the main business is struggling, we need to earn through zaitech"[20] (meaning financial engineering). Olympus invested in financial derivatives and other risky investments to boost profits