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 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2005.0 | April 23 | Kurt Busch | Roush Racing | Ford | 312 | 312 (502.115) | 3:02:16 | 102.707 | Report |
| 2006.0 | April 22 | Kevin Harvick | Richard Childress Racing | Chevrolet | 312 | 312 (502.115) | 2:54:51 | 107.063 | Report |
| 2007.0 | April 21 | Jeff Gordon | Hendrick Motorsports | Chevrolet | 312 | 312 (502.115) | 2:53:48 | 107.71 | Report |
| 2008.0 | April 12 | Jimmie Johnson | Hendrick Motorsports | Chevrolet | 312 | 312 (502.115) | 3:01:14 | 103.292 | Report |
| 2009.0 | April 18 | Mark Martin | Hendrick Motorsports | Chevrolet | 312 | 312 (502.115) | 2:53:16 | 108.042 | Report |
| 2010.0 | April 10 | Ryan Newman | Stewart-Haas Racing | Chevrolet | 378* | 378 (608.332) | 3:48:14 | 99.372 | Report |
| 2011.0 | February 27 | Jeff Gordon | Hendrick Motorsports | Chevrolet | 312 | 312 (502.115) | 3:01:49 | 102.961 | Report |
| 2012.0 | March 4 | Denny Hamlin | Joe Gibbs Racing | Toyota | 312 | 312 (502.115) | 2:50:35 | 110.085 | Report |
Question:
In how many different years did the race happen on February 27?
Answer:
1.0