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 | Competition | Venue | Position | Notes |
| --- | --- | --- | --- | --- |
| 1983 | Pan American Games | Caracas, Venezuela | 2nd | 78.34 m |
| 1985 | Central American and Caribbean Championships | Nassau, Bahamas | 2nd | 76.88 m |
| 1986 | Central American and Caribbean Games | Santiago de los Caballeros, DR | 1st | 77.32 m |
| 1987 | Pan American Games | Indianapolis, United States | 2nd | 75.58 m |
| 1990 | Central American and Caribbean Games | Mexico City, Mexico | 1st | 78.86 m |
| 1990 | Goodwill Games | Seattle, United States | 2nd | 80.84 m |
| 1991 | Pan American Games | Havana, Cuba | 1st | 79.12 m |
| 1991 | World Championships | Tokyo, Japan | 16th | 77.72 m |
Question:
before 1990, how many second places were obtained?
Answer:
3