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:
| Nation | 1986 | 1989 | 1991 | 1997 | 1999 | 2000 | 2003 | 2005 | 2007 | 2009 | 2011 | Years |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Argentina | 4th | - | 4th | 4th | 3rd | 4th | 2nd | 2nd | 2nd | 1st | 2nd | 10 |
| Brazil | 3rd | 3rd | 3rd | 1st | 1st | 1st | 1st | 1st | 1st | 2nd | 1st | 11 |
| Canada | 2nd | 1st | 2nd | 2nd | - | - | 5th | 4th | 6th | - | - | 7 |
| Chile | - | - | - | - | - | - | - | - | - | 3rd | 5th | 2 |
| Colombia | - | - | - | - | 6th | 6th | - | - | - | - | - | 2 |
| Costa Rica | - | - | - | 5th | - | - | - | - | - | - | - | 1 |
| Cuba | - | - | - | - | 2nd | - | - | - | - | - | 3rd | 2 |
| Dominican Republic | - | - | - | - | - | - | 6th | 5th | 3rd | 4th | 6th | 5 |
| Greenland | - | - | - | - | 5th | 3rd | - | - | - | - | - | 2 |
| Guatemala | - | - | - | - | - | - | 7th | - | - | - | - | 1 |
| Mexico | - | 4th | - | 6th | - | 5th | - | - | 8th | 5th | 7th | 6 |
| Paraguay | - | - | 6th | - | - | - | - | - | 4th | 7th | - | 3 |
| Puerto Rico | - | - | 7th | - | - | - | - | - | - | - | - | 1 |
| Uruguay | - | - | 5th | 3rd | 4th | 2nd | 3rd | 3rd | 5th | 6th | 4th | 9 |
| United States | 1st | 2nd | 1st | - | - | - | 4th | 6th | 7th | - | - | 6 |
| Venezuela | - | - | - | - | - | - | - | - | - | - | 8th | 1 |
Question:
what is the number of nations that placed more than five different years?
Answer:
6