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 |
| --- | --- | --- | --- | --- | --- | --- |
| Geelong | 13.14 (92) | St Kilda | 9.11 (65) | Kardinia Park | 7500.0 | 1 September 1945 |
| Fitzroy | 14.22 (106) | Melbourne | 15.11 (101) | Brunswick Street Oval | 5000.0 | 1 September 1945 |
| South Melbourne | 16.16 (112) | Hawthorn | 11.10 (76) | Junction Oval | 12000.0 | 1 September 1945 |
| North Melbourne | 14.17 (101) | Essendon | 13.17 (95) | Arden Street Oval | 12000.0 | 1 September 1945 |
| Richmond | 8.19 (67) | Collingwood | 12.15 (87) | Punt Road Oval | 23000.0 | 1 September 1945 |
| Footscray | 8.14 (62) | Carlton | 16.19 (115) | Western Oval | 30000.0 | 1 September 1945 |
Question:
What was Richmond's highest attendance?
Answer:
23000.0