Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Release format | Country | Label | Cat. No. | Release date |
| --- | --- | --- | --- | --- |
| Vinyl | West Germany | Ariola | 203 265-320 | 1980.0 |
| Cassette | West Germany | Ariola | 401 265-352 | 1980.0 |
| Vinyl | West Germany | Ariola | 302 208 | 1980.0 |
| Vinyl | Spain | Ariola | 1-201265 | 1980.0 |
| Vinyl | Canada | Quality | Sv 2070 | 1980.0 |
| Vinyl | Yugoslavia | RTB | St 2220164 | 1980.0 |
| Vinyl | Italy | Rca Victor | PL 31503 | 1980.0 |
| Cassette | Italy | Rca Victor | PK 31503 | 1980.0 |
| Vinyl | Portugal | Ariola | 72 877 | 1980.0 |
| Vinyl | United Kingdom | Ariola | ARL 5051 | 1980.0 |
| Vinyl | Worldwide | Ariola | 201 265-352 | 1980.0 |
Question:
How many release dates has Canada had?
Answer:
1.0