This document discusses the history and development of something between 1981 and 2001. It mentions several years in the 1980s and early 1990s. It also references the design of something by AKIBO in March 1990, the birth and death years of two people named 1956-1990 and 1905-1981, and several more years in the 1990s relating to development, with the last ones being 1997, 1998, and 2001.