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 |
| --- | --- | --- | --- | --- | --- | --- |
| St Kilda | 7.7 (49) | South Melbourne | 13.15 (93) | Junction Oval | 21000.0 | 30 June 1951 |
| Collingwood | 10.12 (72) | Footscray | 12.5 (77) | Victoria Park | 25000.0 | 30 June 1951 |
| Carlton | 14.20 (104) | North Melbourne | 5.10 (40) | Princes Park | 22000.0 | 30 June 1951 |
| Fitzroy | 10.14 (74) | Hawthorn | 11.9 (75) | Brunswick Street Oval | 8500.0 | 7 July 1951 |
| Essendon | 10.14 (74) | Richmond | 10.10 (70) | Windy Hill | 30000.0 | 7 July 1951 |
| Melbourne | 7.7 (49) | Geelong | 12.12 (84) | MCG | 22500.0 | 7 July 1951 |
Question:
Which match had the largest crowd size where the away team was North Melbourne?
Answer:
22000.0