Table:
text: Valdosta State Blazers football
Head coaches
Head coaches
Tenure Coach Years Record Pct_
1982–1984 Jim Goodman 3 15–17–1 .470
1985 Jim Berryman 1 5–6–0 .455
1986–1991 Mike Cavan 6 37–22–2 .623
1992–1996 Hal Mumme 5 40–17–1 .698
1997–1999 Mike Kelly 3 15–16–0 .484
1999 Mark Nelson 1 0–2–0 .000
2000–2006 Chris Hatcher 7 76–12–0 .864
2007–present David Dean 6 54-17–0 .760
Totals 8 coaches 30 seasons 242–109–4 .687

Question: How many years has coach Jim Berryman worked for Valdosta State Blazers football?