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:
| Year | Total | Less than a year | One year | Two years | Three years | Four years | 5–9 years | 10–14 years | 15–19 years | 20–24 years | 25 and more | Unknown |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2004.0 | 1 293 | 54.0 | 149.0 | 181.0 | 129.0 | 97.0 | 249.0 | 221.0 | 118.0 | 48.0 | 45.0 | 2.0 |
| 2005.0 | 1 445 | 67.0 | 143.0 | 186.0 | 172.0 | 148.0 | 272.0 | 228.0 | 137.0 | 52.0 | 40.0 | 0.0 |
| 2006.0 | 1 480 | 74.0 | 152.0 | 191.0 | 172.0 | 177.0 | 351.0 | 147.0 | 128.0 | 46.0 | 41.0 | 1.0 |
| 2007.0 | 1 558 | 149.0 | 208.0 | 162.0 | 177.0 | 206.0 | 334.0 | 128.0 | 106.0 | 50.0 | 38.0 | 0.0 |
| 2008.0 | 1 026 | 73.0 | 141.0 | 121.0 | 103.0 | 146.0 | 258.0 | 72.0 | 62.0 | 24.0 | 26.0 | 0.0 |
| 2009.0 | 1 555 | 122.0 | 213.0 | 190.0 | 170.0 | 170.0 | 419.0 | 109.0 | 67.0 | 55.0 | 40.0 | 0.0 |
| 2010.0 | 1 453 | 124.0 | 215.0 | 202.0 | 170.0 | 129.0 | 377.0 | 86.0 | 68.0 | 37.0 | 45.0 | 0.0 |
| 2011.0 | 1469 | 129.0 | 211.0 | 159.0 | 154.0 | 139.0 | 384.0 | 104.0 | 77.0 | 49.0 | 63.0 | 0.0 |
Question:
If unknown is larger than 1.0, what is the maximum two year amount?
Answer:
181.0