human
humana inc. notes to consolidated financial statements 2014 (continued) the total intrinsic value of stock options exercised during 2007 was $133.9 million, compared with $133.7 million during 2006 and $57.8 million during 2005. cash received from stock option exercises for the years ended december 31, 2007, 2006, and 2005 totaled $62.7 million, $49.2 million, and $36.4 million, respectively. total compensation expense related to nonvested options not yet recognized was $23.6 million at december 31, 2007. we expect to recognize this compensation expense over a weighted average period of approximately 1.6 years. restricted stock awards restricted stock awards are granted with a fair value equal to the market price of our common stock on the date of grant. compensation expense is recorded straight-line over the vesting period, generally three years from the date of grant. the weighted average grant date fair value of our restricted stock awards was $63.59, $54.36, and $32.81 for the years ended december 31, 2007, 2006, and 2005, respectively. activity for our restricted stock awards was as follows for the year ended december 31, 2007: shares weighted average grant-date fair value.
|  | Shares | Weighted Average Grant-Date Fair Value |
| --------- | --------- | --------- |
| Nonvested restricted stock at December 31, 2006 | 1,107,455 | $45.86 |
| Granted | 852,353 | 63.59 |
| Vested | (51,206) | 56.93 |
| Forfeited | (63,624) | 49.65 |
| Nonvested restricted stock at December 31, 2007 | 1,844,978 | $53.61 |
the fair value of shares vested during the years ended december 31, 2007, 2006, and 2005 was $3.4 million, $2.3 million, and $0.6 million, respectively. total compensation expense related to nonvested restricted stock awards not yet recognized was $44.7 million at december 31, 2007. we expect to recognize this compensation expense over a weighted average period of approximately 1.4 years. there are no other contractual terms covering restricted stock awards once vested. .
Please compute the result.
what is the ratio of the 2007 weighted average grant date fair value of the restricted stocks to 2006?
assistant
1.16979
human
what is that value less 1?
assistant
0.16979