user
Instruction
Answer the question based on the provided table.


Table
Table Title: percentage of immigrants and second-generation individuals in the census metropolitan area of vancouver by municipalities (census subdivisions) with over 40,000 inhabitants, 2011
Table Content:
<table border="1" cellspacing="0">
<tr> <td rowspan="3"> municipality </td> <td rowspan="2"> total population </td> <td colspan="3"> type of population </td> </tr>
<tr> <td> immigrant </td> <td> second generation </td> <td> population with an immigrant background </td> </tr>
<tr> <td> thousands </td> <td colspan="3"> percentage </td> </tr>
<tr> <td> census metropolitan area of vancouver </td> <td> 2,272.7 </td> <td> 40.1 </td> <td> 15.7 </td> <td> 55.8 </td> </tr>
<tr> <td> langley, dm </td> <td> 103.1 </td> <td> 18.0 </td> <td> 10.7 </td> <td> 28.7 </td> </tr>
<tr> <td> surrey </td> <td> 463.3 </td> <td> 40.5 </td> <td> 18.9 </td> <td> 59.5 </td> </tr>
<tr> <td> delta </td> <td> 98.7 </td> <td> 28.9 </td> <td> 14.9 </td> <td> 43.8 </td> </tr>
<tr> <td> richmond </td> <td> 189.3 </td> <td> 59.6 </td> <td> 15.4 </td> <td> 75.0 </td> </tr>
<tr> <td> vancouver </td> <td> 590.2 </td> <td> 43.8 </td> <td> 17.0 </td> <td> 60.8 </td> </tr>
<tr> <td> burnaby </td> <td> 220.3 </td> <td> 50.5 </td> <td> 17.8 </td> <td> 68.2 </td> </tr>
<tr> <td> new westminster </td> <td> 65.1 </td> <td> 33.4 </td> <td> 14.6 </td> <td> 48.0 </td> </tr>
<tr> <td> coquitlam </td> <td> 125.0 </td> <td> 41.7 </td> <td> 13.7 </td> <td> 55.3 </td> </tr>
<tr> <td> port coquitlam </td> <td> 55.8 </td> <td> 29.4 </td> <td> 12.9 </td> <td> 42.3 </td> </tr>
<tr> <td> north vancouver, dm </td> <td> 83.6 </td> <td> 29.9 </td> <td> 11.9 </td> <td> 41.7 </td> </tr>
<tr> <td> north vancouver, cy </td> <td> 47.7 </td> <td> 37.2 </td> <td> 12.0 </td> <td> 49.2 </td> </tr>
<tr> <td> west vancouver </td> <td> 42.0 </td> <td> 40.7 </td> <td> 11.4 </td> <td> 52.2 </td> </tr>
<tr> <td> maple ridge </td> <td> 75.1 </td> <td> 17.2 </td> <td> 9.9 </td> <td> 27.1 </td> </tr>
</table>


Question
what is the proportion of vancouver cma's population with an immigrant background?


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["55.8"]