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 |
| --- | --- | --- | --- | --- | --- | --- |
| North Melbourne | 21.19 (145) | South Melbourne | 12.25 (97) | Arden Street Oval | 19437.0 | 28 March 1981 |
| Footscray | 16.12 (108) | St Kilda | 23.19 (157) | Western Oval | 19101.0 | 28 March 1981 |
| Melbourne | 16.16 (112) | Hawthorn | 23.15 (153) | MCG | 32202.0 | 28 March 1981 |
| Geelong | 10.17 (77) | Essendon | 10.11 (71) | Kardinia Park | 37303.0 | 28 March 1981 |
| Fitzroy | 20.13 (133) | Collingwood | 22.27 (159) | Junction Oval | 27200.0 | 28 March 1981 |
| Carlton | 22.12 (144) | Richmond | 12.10 (82) | VFL Park | 56372.0 | 28 March 1981 |
Question:
How big was the crowd when the opponent was essendon?
Answer:
37303.0