The following table shows the number of employees working in four organisations in six years. Answer the questions that follow.
| Organization | Year | |||||
| 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
| X | 52 | 82 | 62 | 34 | 68 | 76 |
| Y | 105 | 80 | 120 | 160 | 95 | 100 |
| Z | 103 | 86 | 88 | 212 | 180 | 129 |
| T | 153 | 221 | 128 | 126 | 97 | 106 |
What is the average number of employees in organisations Y, Z and T in 2013?