Range of exercise price ($) | | Number of options outstanding | | Weighted average remaining contractual life (years) | | Weighted average exercise price ($) | | |||
At December 31, 2017 | | | 2,000 | | | 0.39 | | | 45.27 | |
| | | 2,000 | | | 0.39 | | | 45.27 | |
At December 31, 2016 | | | | | | | | | | |
22.19 22.19 | | | 12,477 | | | 0.64 | | | 22.19 | |
26.26 46.34 | | | 2,000 | | | 1.39 | | | 45.27 | |
| | | 14,477 | | | 0.74 | | | 25.38 | |
At December 31, 2015 | | | | | | | | | | |
22.19 22.19 | | | 78,277 | | | 1.64 | | | 22.19 | |
26.26 46.34 | | | 31,000 | | | 2.80 | | | 30.69 | |
56.99 56.99 | | | 16,000 | | | 3.67 | | | 56.99 | |
| | | 125,277 | | | 2.19 | | | 28.74 | |