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:
| Home team | Home team score | Away team | Away team score | Venue | Crowd | Date |
| --- | --- | --- | --- | --- | --- | --- |
| Essendon | 15.12 (102) | St Kilda | 10.19 (79) | Windy Hill | 21469.0 | 28 July 1973 |
| Carlton | 15.17 (107) | Richmond | 10.21 (81) | Princes Park | 28592.0 | 28 July 1973 |
| South Melbourne | 19.16 (130) | North Melbourne | 14.7 (91) | Lake Oval | 13637.0 | 28 July 1973 |
| Hawthorn | 15.10 (100) | Fitzroy | 9.9 (63) | Glenferrie Oval | 12386.0 | 28 July 1973 |
| Melbourne | 12.15 (87) | Collingwood | 17.24 (126) | MCG | 37838.0 | 28 July 1973 |
| Footscray | 21.15 (141) | Geelong | 13.14 (92) | VFL Park | 13546.0 | 28 July 1973 |
Question:
What was the attendance when St Kilda played as the away team?
Answer:
21469.0