Table:
|  |  | RSUs & PRSUs Outstanding |
| --- | --- | --- |
|  | Number of Shares | Weighted Average Grant Date Fair Value |
|  | (in thousands) |  |
| Nonvested at January 1, 2017 | 98 | $23.52 |
| Granted | 132 | 19.74 |
| Vested | (43) | 20.44 |
| Forfeited | (19) | — |
| Nonvested at January 1, 2018 | 168 | 21.56 |
| Granted | 110 | 11.90 |
| Vested | (77) | 19.18 |
| Forfeited | (18) | — |
| Nonvested at December 30, 2018 | 183 | 17.22 |
| Granted | 353 | 10.77 |
| Vested | (118) | 14.48 |
| Forfeited | (41) | — |
| Nonvested at December 29, 2019 | 377 | $12.55 |
Paragraphs:
Restricted Stock Units
The Company grants restricted stock units, or RSUs, to employees with various vesting terms. RSUs entitle the holder to receive, at no cost, one common share for each restricted stock unit on the vesting date as it vests. The Company withholds shares in settlement of employee tax withholding obligations upon the vesting of restricted stock units. Stock-based compensation related to grants of vested RSUs and PSUs was $3.0 million, $1.6, million and $1.0 million in 2019, 2018 and 2017, respectively.
The following table summarizes RSU’s activity under the 2019 Plan and 2009 Plan, and the related weighted average grant date fair value, for 2019, 2018 and 2017:
Question:
What is the average number of nonvested shares vested on January 1, 2017 and between December 30, 2018 and December 29, 2019?
Answer: (43 + 118)/2  = 80.5