Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Starts | Wins | Top 5 | Top 10 | Poles | Avg. Start | Avg. Finish | Winnings | Position | Team(s) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1986 | 2 | 0 | 0 | 0 | 0 | 21.0 | 29.0 | $535 | 110th | #31 Grissom Racing Enterprises |
| 1987 | 2 | 0 | 0 | 0 | 0 | 17.0 | 21.5 | $975 | 49th | #39 Grissom Racing Enterprises |
| 1988 | 29 | 0 | 1 | 4 | 0 | 23.6 | 20.4 | $45,391 | 13th | #39 Grissom Racing Enterprises |
| 1989 | 29 | 0 | 2 | 5 | 0 | 23.1 | 18.9 | $71,822 | 12th | #9/#19 Falcon Racing |
| 1990 | 31 | 4 | 11 | 15 | 1 | 14.8 | 13.2 | $166,842 | 3rd | #31 Grissom Racing Enterprises |
| 1991 | 31 | 1 | 7 | 13 | 1 | 20.5 | 15.7 | $152,206 | 10th | #31 Grissom Racing Enterprises |
| 1992 | 31 | 1 | 2 | 7 | 1 | 19.7 | 16.7 | $170,716 | 12th | #31 Grissom Racing Enterprises |
| 1993 | 28 | 2 | 11 | 18 | 0 | 21.5 | 10.3 | $336,432 | 1st | #31 Grissom Racing Enterprises |
| 1994 | 11 | 0 | 1 | 1 | 0 | 27.5 | 26.6 | $39,475 | 43rd | #31 Grissom Racing Enterprises |
| 1995 | 15 | 2 | 4 | 7 | 0 | 23.9 | 15.6 | $110,105 | 26th | #29 Diamond Ridge Motorsports |
| 1996 | 8 | 1 | 3 | 4 | 0 | 25.9 | 14.1 | $90,942 | 45th | #29 Diamond Ridge Motorsports |
| 1997 | 1 | 0 | 0 | 0 | 0 | 43.0 | 39.0 | $4,425 | 114th | #5 Labonte Motorsports |
| 1998 | 2 | 0 | 0 | 0 | 1 | 22.0 | 23.0 | $16,444 | 77th | #12 Spencer Motor Ventures\n#59 ST Motorsports |
| 1999 | 12 | 0 | 0 | 0 | 0 | 35.5 | 30.6 | $128,750 | 52nd | #74 BACE Motorsports\n#12 Spencer Motor Ventures\n#22 AllCar Motorsports\n#44 Labonte Motorsports\n#63 HVP Motorsports\n#11 Jarrett/Favre Motorsports |
| 2000 | 1 | 0 | 0 | 0 | 0 | 43.0 | 37.0 | $7,925 | 109th | #8 Petty Enterprises |
| 2001 | 1 | 0 | 0 | 0 | 0 | 21.0 | 26.0 | $27,000 | 151st | #45 Petty Enterprises |
| 2002 | 7 | 0 | 0 | 0 | 0 | 30.6 | 30.4 | $86,830 | 56th | #34 Frank Cicci Racing |
| 2003 | 6 | 0 | 0 | 0 | 0 | 37.0 | 27.8 | $83,825 | 67th | #07 DLP Racing\n#61/#36 DCT Motorsports |
| 2004 | 26 | 0 | 0 | 0 | 0 | 37.3 | 28.6 | $482,604 | 28th | #36 DCT Motorsports\n#24/#93 GIC-Mixon Motorsports |
| 2005 | 31 | 0 | 0 | 0 | 0 | 40.3 | 32.2 | $602,395 | 23rd | #49 Jay Robinson Racing |
| 2006 | 2 | 0 | 0 | 0 | 0 | 42.0 | 30.5 | $72,136 | 98th | #49 Jay Robinson Racing |
| 2007 | 1 | 0 | 0 | 0 | 0 | 43.0 | 25.0 | $45,800 | 133rd | #34 Frank Cicci Racing |
| 2008 | 1 | 0 | 0 | 0 | 0 | 43.0 | 43.0 | $42,651 | 148th | #90 MSRP Motorsports |
| 2009 | 1 | 0 | 0 | 0 | 0 | 43.0 | 43.0 | $20,927 | 149th | #0 JD Motorsports |
Question:
how many times was his average finish below 18?
Answer:
6