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:
| Rank | Location | Total Passengers | Annual change | Capacity in use |
| --- | --- | --- | --- | --- |
| 1.0 | São Paulo | 18795596.0 | 19.3% | 113.9% |
| 2.0 | São Paulo | 15265433.0 | 17.3% | 127.2% |
| 3.0 | Brasília | 11119872.0 | 15.0% | 150.3% |
| 4.0 | Rio de Janeiro | 10352616.0 | 16.9% | 69.0% |
| 5.0 | Salvador | 5932461.0 | 9.3% | 98.9% |
| 6.0 | Porto Alegre | 4444748.0 | 15.6% | 72.9% |
| 7.0 | Belo Horizonte | 4340129.0 | 16.4% | 86.8% |
| 8.0 | Recife | 4188081.0 | 5.9% | 83.8% |
| 9.0 | Curitiba | 3907275.0 | 10.6% | 111.6% |
| 10.0 | Fortaleza | 3614439.0 | 10.1% | 120.5% |
| 11.0 | Rio de Janeiro | 3214415.0 | 9.5% | 100.5% |
| 12.0 | Belém | 2119552.0 | 19.3% | 78.5% |
| 13.0 | Manaus | 2080342.0 | 23.1% | 114.6% |
| 14.0 | Florianópolis | 1948010.0 | 19.5% | 177.1% |
| 15.0 | Vitória | 1894540.0 | 14.0% | 336.3% |
Question:
What is the average rank of the airport in São Paulo with passengers totaling less than 18,795,596?
Answer:
2.0