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 | 18.17 (125) | Richmond | 15.8 (98) | Kardinia Park | 20566.0 | 22 April 1978 |
| Fitzroy | 21.17 (143) | South Melbourne | 18.16 (124) | Junction Oval | 13660.0 | 22 April 1978 |
| Collingwood | 14.19 (103) | Hawthorn | 15.15 (105) | Victoria Park | 28714.0 | 22 April 1978 |
| St Kilda | 14.16 (100) | North Melbourne | 17.17 (119) | Moorabbin Oval | 29117.0 | 22 April 1978 |
| Melbourne | 18.19 (127) | Footscray | 18.12 (120) | MCG | 14865.0 | 22 April 1978 |
| Essendon | 19.17 (131) | Carlton | 16.8 (104) | VFL Park | 34516.0 | 22 April 1978 |
Question:
What was the crowd size when Geelong played at home?
Answer:
20566.0