Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_73624 ( "Year" real, "Tournament" text, "Winner" text, "Margin of victory" text, "Winners share ( $ )" real, "Par" real, "Course length" text )

### Question ###
When 1999 is the year how many tournaments are there?

### Accurate SQL ###

SELECT COUNT("Tournament") FROM table_73624 WHERE "Year" = '1999'