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:
| Club | First season in top division | Number of seasons in top division | First season of current spell in top division | Number of seasons in Liga MX | Top division titles |
| --- | --- | --- | --- | --- | --- |
| América | 1943-44 | 89.0 | 1943-44 | 89.0 | 11.0 |
| Atlante | 1943-44 | 87.0 | 1991-92 | 40.0 | 3.0 |
| Atlas | 1943-44 | 86.0 | 1979-80 | 51.0 | 1.0 |
| Chiapas | 2002-03 | 22.0 | 2002-03 | 22.0 | 0.0 |
| Cruz Azul | 1964-65 | 68.0 | 1964-65 | 68.0 | 8.0 |
| Guadalajara | 1943-44 | 89.0 | 1943-44 | 89.0 | 11.0 |
| León | 1944-45 | 65.0 | 2012-13 | 2.0 | 5.0 |
| Monterrey | 1945-46 | 74.0 | 1960-61 | 72.0 | 4.0 |
| Morelia | 1957-58 | 61.0 | 1981-82 | 50.0 | 1.0 |
| Pachuca | 1967-68 | 40.0 | 1998-99 | 30.0 | 5.0 |
| Puebla | 1944-45 | 69.0 | 2007-08 | 12.0 | 2.0 |
| Querétaro | 1990-91 | 18.0 | 2009-10 | 8.0 | 0.0 |
| Santos Laguna | 1988-89 | 42.0 | 1988-89 | 42.0 | 4.0 |
| Tijuana | 2011-12 | 4.0 | 2011-12 | 4.0 | 1.0 |
| Toluca | 1953-54 | 79.0 | 1953-54 | 79.0 | 10.0 |
| UANL | 1974-75 | 55.0 | 1997-98 | 32.0 | 3.0 |
| UNAM | 1962-63 | 70.0 | 1962-63 | 70.0 | 7.0 |
Question:
How many 'number of seasons in top division' were played if the 'first season in top division' games is in 1990-91?
Answer:
18.0