Table:
text: Vince Gilligan
Writer
Writer
Year_ Show_ Season Episode Episode_number Original_airdate
1998 The X-Files 5  Kitsunegari  8 January 4, 1998
1998 The X-Files 5  Bad Blood  12 February 22, 1998
1998 The X-Files 5  Folie a Deux  19 May 10, 1998
1998 The X-Files 6  Drive  2 November 15, 1998
1998 The X-Files 6  Dreamland  4 November 29, 1998
1998 The X-Files 6  Dreamland II  5 December 6, 1998
1999 The X-Files 6  Tithonus  10 January 24, 1999
1999 The X-Files 6  Monday  14 February 28, 1999
1999 The X-Files 6  Three of a Kind  20 May 2, 1999
1999 The X-Files 6  Field Trip  21 May 9, 1999
1999 The X-Files 7  Hungry  3 November 21, 1999

text: Vince Gilligan
Writer
Writer
Year_ Show_ Season Episode Episode_number Original_airdate
1999 The X-Files 7  Millennium  4 November 28, 1999
2000 The X-Files 7  The Amazing Maleeni  8 January 16, 2000
2000 The X-Files 7  X-Cops  12 February 20, 2000
2000 The X-Files 7  Theef  14 March 12, 2000
2000 The X-Files 7  Je Souhaite  21 May 14, 2000
2000 The X-Files 8  Roadrunners  4 November 26, 2000
2001 The Lone Gunmen 1 Pilot 1 March 4, 2001
2001 The Lone Gunmen 1 Maximum Byers 8 April 13, 2001
2001 The Lone Gunmen 1 All About Yves 13 May 11, 2001
2002 The X-Files 9  John Doe  7 January 13, 2002

Question: If the original air date is January 24, 1999 and if the year is before 1999, how many seasons does Vince Gilligan have in total?