Classification of Periods of Immigration, Aggregating Before 1992
Classification structure
| Code | Title |
|---|---|
| 1 | (Period of immigration) Before 1992 |
| 2 | (Period of immigration) 1992 to 2002 |
| 3 | (Period of immigration) 2003 to 2008 |
| 4 | (Period of immigration) 2009 to 2013 |
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