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:
| Venue | Hosted | Average | Highest | Lowest | Total | Last Year | Up/Down |
| --- | --- | --- | --- | --- | --- | --- | --- |
| MCG | 42.0 | 46141.0 | 91571.0 | 12400.0 | 1937921.0 | 42,370 | + 3771 |
| Football Park | 22.0 | 32424.0 | 42659.0 | 19511.0 | 713320.0 | 35,331 | – 2907 |
| Colonial Stadium | 48.0 | 30524.0 | 47071.0 | 16004.0 | 1465172.0 | N/A | N/A |
| Subiaco Oval | 16.0 | 30326.0 | 40519.0 | 19777.0 | 485208.0 | 28,506 | + 1820 |
| GABBA | 11.0 | 27406.0 | 34743.0 | 21956.0 | 301470.0 | 21,890 | + 5516 |
| Optus Oval | 9.0 | 24656.0 | 31988.0 | 16415.0 | 221902.0 | 21,586 | + 3070 |
| SCG | 15.0 | 22390.0 | 34687.0 | 7334.0 | 335845.0 | 26,767 | – 4377 |
| Shell Stadium | 7.0 | 22108.0 | 26761.0 | 17399.0 | 154753.0 | 21,922 | + 186 |
| WACA | 6.0 | 20870.0 | 26554.0 | 10826.0 | 125220.0 | 24,524 | – 3654 |
Question:
What is the up/down associated with the Subiaco Oval?
Answer:
+ 1820