Tolong jelaskan mengenai 1990-an dari List of years in sumo

1999 in sumo - Musashimaru dominates, Chiyotaikai and Dejima win their first championships

1998 in sumo - between them, the Futagoyama brothers dominate, Kotonishiki becomes only wrestler to win two championships at maegashira rank

1997 in sumo - Futagoyama wrestlers continue championship dominance

1996 in sumo - Takanohana takes 4 championships, and stablemate Takanonami one for a near year sweep

1995 in sumo - Takanohana takes 4 championships to dominate; his brother Wakanohana takes 1

1994 in sumo - Musashimaru wins 1st championship, Takanohana achieves necessary criteria for promotion to yokozuna

1993 in sumo - Akebono becomes first foreign-born yokozuna, has most dominant year at 4 championships, Futagoyama brothers take one each

1992 in sumo - Asahifuji retires leaving no yokozuna for the next eight months, championships are split Takahanada* 2, Akebono 2, and 1 each for Konishiki and Mitoizumi

1991 in sumo - Hokutoumi and Asahifuji win their last championships, Kotonishiki wins his first, Kirishima and Kotofuji win their only championships

1990 in sumo - championships split at two each between Ōzeki Asahifuji, and yokozunas Hokutoumi and Chiyonofuji, the second win would be Chiyonofuji's last

*Takahanada would later become the 2nd Takanohana.