Table:
text: Capital Artists
Male singers
List of male Capital Artists singers
English_name Chinese_name Year_signed Year_separated Reason_for_separation
Tsui Chun Tung 徐鎮東 1990 1993 Retired from music industry
Aaron Kwok 郭富城 1991 1993 †
Chang Kuan 常寬 1992 1992 Retired from music industry
Phil Chang 張宇 1993 1994 †
Michael Tong Man Lung 唐文龍 1994 1996 †
Gabriel Harrison 海俊傑 1994 1997 Retired from music industry
Eason Chan 陳奕迅 1995 2000 †
Cheung Ming-Man 張明敏 1997 1997 Retired from music industry
Wilfred Lau 劉浩龍 1997 2001 Capital stopped recording music
Louis Koo 古天樂 1998 2001 †
Patrick Tang 鄧健泓 1998 2001 †
Ho Yin Leung 梁浩賢 2000 2001 Retired from music industry

text: Capital Artists
Male singers
List of male Capital Artists singers
English_name Chinese_name Year_signed Year_separated Reason_for_separation
Bill Chan 石修 1971 [Unknown] †
Roman Tam 羅文 1974 1989 †
Leslie Cheung 張國榮 1982 1986 †
David Lui 呂方 1984 1990 †
Andy Lau 劉德華 1985 1985 †
Tony Leung Chiu-Wai 梁朝偉 1985 1992 †
Jackie Chan 成龍 1986 1989 †
Alex To 杜德偉 1986 1990 †
Andy Hui 許志安 1986 1997 †
Adam Cheng 鄭少秋 1987 1987 †
Leon Lai 黎明 1987 1990 †
William So 蘇永康 1987 1987 †
Anthony Lun 倫永亮 1988 1990 †
Patrick Tam Yiu Man 譚耀文 1989 1994 Dissolved contract with Capital
Edmond Leung 梁漢文 1989 2001 Capital stopped recording music

Question: What year did Wilfred Lau break up because Capital stopped recording music for Capital Artists?