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 | Date | Driver | Team | Manufacturer | Laps | Miles (km) | Race Time | Average Speed (mph) | Report |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1997 | June 22 | Jeff Gordon | Hendrick Motorsports | Chevrolet | 250 | 500 (804.672) | 3:13:32 | 155.012 | Report |
| 1998 | May 3 | Mark Martin | Roush Racing | Ford | 250 | 500 (804.672) | 3:33:57 | 140.22 | Report |
| 1999 | May 2 | Jeff Gordon | Hendrick Motorsports | Chevrolet | 250 | 500 (804.672) | 3:19:38 | 150.276 | Report |
| 2000 | April 30 | Jeremy Mayfield | Penske Racing | Ford | 250 | 500 (804.672) | 3:20:50 | 149.378 | Report |
| 2001 | April 29 | Rusty Wallace | Penske Racing | Ford | 250 | 500 (804.672) | 3:29:37 | 143.118 | Report |
| 2002 | April 28 | Jimmie Johnson | Hendrick Motorsports | Chevrolet | 250 | 500 (804.672) | 3:19:53 | 150.088 | Report |
| 2003 | April 27 | Kurt Busch | Roush Racing | Ford | 250 | 500 (804.672) | 3:34:07 | 140.111 | Report |
| 2004 | May 2 | Jeff Gordon | Hendrick Motorsports | Chevrolet | 250 | 500 (804.672) | 3:38:33 | 137.268 | Report |
| 2005 | February 27 | Greg Biffle | Roush Racing | Ford | 250 | 500 (804.672) | 3:34:45 | 139.697 | Report |
| 2006 | February 26 | Matt Kenseth | Roush Racing | Ford | 251* | 502 (807.89) | 3:23:43 | 147.852 | Report |
| 2007 | February 25 | Matt Kenseth | Roush Fenway Racing | Ford | 250 | 500 (804.672) | 3:36:41 | 138.451 | Report |
| 2008 | Feb 24/25* | Carl Edwards | Roush Fenway Racing | Ford | 250 | 500 (804.672) | 3:46:04 | 132.704 | Report |
| 2009 | February 22 | Matt Kenseth | Roush Fenway Racing | Ford | 250 | 500 (804.672) | 3:40:51 | 135.839 | Report |
| 2010 | February 21 | Jimmie Johnson | Hendrick Motorsports | Chevrolet | 250 | 500 (804.672) | 3:31:24 | 141.911 | Report |
| 2011 * | March 27 | Kevin Harvick | Richard Childress Racing | Chevrolet | 200 | 400 (643.737) | 2:39:06 | 150.849 | Report |
| 2012 | March 25 | Tony Stewart | Stewart-Haas Racing | Chevrolet | 129* | 258 (415.21) | 1:36:39 | 160.166 | Report |
Question:
How many laps have an average speed  (mph) of 140.22?
Answer:
250.0