Classification of period of construction
Status: This was the recommended standard from September 11, 2013 to March 23, 2016.
Classification structure
| Code | Category |
|---|---|
| 1 | 1920 or before |
| 2 | 1921 to 1945 |
| 3 | 1946 to 1960 |
| 4 | 1961 to 1970 |
| 5 | 1971 to 1980 |
| 6 | 1981 to 1990 |
| 7 | 1991 to 1995 |
| 8 | 1996 to 2000 |
| 9 | 2001 to 2005 |
| 10 | 2006 to 2011 |
- Date modified: