user
Instruction
Answer the question based on the provided table.


Table
Table Title: police officers by level of policing, by province and territory, 2015
Table Content:
<table border="1" cellspacing="0">
<tr> <td rowspan="3"> province and territory </td> <td rowspan="2"> 2015 population </td> <td rowspan="2"> municipal police services </td> <td rowspan="2"> provincial police services </td> <td colspan="2"> royal canadian mounted police </td> <td rowspan="2"> total police officers </td> <td rowspan="2"> police officers per 100,000 population </td> <td colspan="2"> percent change in rate </td> </tr>
<tr> <td> contract policing </td> <td> federal and other policing </td> <td> 2014 to 2015 </td> <td> 2005 to 2015 </td> </tr>
<tr> <td colspan="6"> number </td> <td> rate </td> <td colspan="2"> percent </td> </tr>
<tr> <td> newfoundland and labrador </td> <td> 527,756 </td> <td> .. </td> <td> 393 </td> <td> 401 </td> <td> 95 </td> <td> 889 </td> <td> 168 </td> <td> -0.4 </td> <td> 11.7 </td> </tr>
<tr> <td> prince edward island </td> <td> 146,447 </td> <td> 97 </td> <td> .. </td> <td> 102 </td> <td> 27 </td> <td> 226 </td> <td> 154 </td> <td> -4.4 </td> <td> 0.0 </td> </tr>
<tr> <td> nova scotia </td> <td> 943,002 </td> <td> 863 </td> <td> .. </td> <td> 810 </td> <td> 182 </td> <td> 1,855 </td> <td> 197 </td> <td> -1.6 </td> <td> 13.6 </td> </tr>
<tr> <td> new brunswick </td> <td> 753,871 </td> <td> 437 </td> <td> .. </td> <td> 688 </td> <td> 153 </td> <td> 1,278 </td> <td> 170 </td> <td> -0.8 </td> <td> -2.2 </td> </tr>
<tr> <td> quebec </td> <td> 8,263,600 </td> <td> 9,521 </td> <td> 5,555 </td> <td> .. </td> <td> 935 </td> <td> 16,011 </td> <td> 194 </td> <td> -1.7 </td> <td> -0.4 </td> </tr>
<tr> <td> ontario </td> <td> 13,792,052 </td> <td> 18,414 </td> <td> 6,137 </td> <td> .. </td> <td> 1,654 </td> <td> 26,205 </td> <td> 190 </td> <td> -0.6 </td> <td> 1.6 </td> </tr>
<tr> <td> manitoba </td> <td> 1,293,378 </td> <td> 1,589 </td> <td> .. </td> <td> 815 </td> <td> 198 </td> <td> 2,602 </td> <td> 201 </td> <td> -2.7 </td> <td> 5.1 </td> </tr>
<tr> <td> saskatchewan </td> <td> 1,133,637 </td> <td> 1,041 </td> <td> .. </td> <td> 988 </td> <td> 257 </td> <td> 2,286 </td> <td> 202 </td> <td> -1.3 </td> <td> -0.4 </td> </tr>
<tr> <td> alberta </td> <td> 4,196,457 </td> <td> 4,209 </td> <td> .. </td> <td> 2,596 </td> <td> 350 </td> <td> 7,155 </td> <td> 171 </td> <td> 0.5 </td> <td> 6.2 </td> </tr>
<tr> <td> british columbia </td> <td> 4,683,139 </td> <td> 2,534 </td> <td> .. </td> <td> 5,265 </td> <td> 879 </td> <td> 8,678 </td> <td> 185 </td> <td> -0.9 </td> <td> 4.5 </td> </tr>
<tr> <td> yukon </td> <td> 37,428 </td> <td> .. </td> <td> .. </td> <td> 112 </td> <td> 18 </td> <td> 130 </td> <td> 347 </td> <td> -4.8 </td> <td> -7.7 </td> </tr>
<tr> <td> northwest territories </td> <td> 44,088 </td> <td> .. </td> <td> .. </td> <td> 181 </td> <td> 20 </td> <td> 201 </td> <td> 456 </td> <td> 4.4 </td> <td> 14.4 </td> </tr>
<tr> <td> nunavut </td> <td> 36,919 </td> <td> .. </td> <td> .. </td> <td> 116 </td> <td> 15 </td> <td> 131 </td> <td> 355 </td> <td> 7.6 </td> <td> -11.1 </td> </tr>
<tr> <td> provincial and territorial total </td> <td> 35,851,774 </td> <td> 38,705 </td> <td> 12,085 </td> <td> 12,074 </td> <td> 4,783 </td> <td> 67,647 </td> <td> 189 </td> <td> -0.9 </td> <td> 2.2 </td> </tr>
<tr> <td>  </td> <td> .. </td> <td> .. </td> <td> .. </td> <td> .. </td> <td> 1,130 </td> <td> 1,130 </td> <td> .. </td> <td> .. </td> <td> .. </td> </tr>
<tr> <td> canada </td> <td> 35,851,774 </td> <td> 38,705 </td> <td> 12,085 </td> <td> 12,074 </td> <td> 5,913 </td> <td> 68,777 </td> <td> 192 </td> <td> -0.9 </td> <td> 1.4 </td> </tr>
</table>


Question
how many percentage points did the rate of police strength increase in alberta?


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["0.5"]