There are multiple races held every year. The number has been steadily increasing over the past few years. There were 19 races in the 2010 season and 20 races in the 2011 season. The 2009 season had only 17 races. The number of tracks/races keeps changing every year.
In 2005, Michael Schumacher had one Formula 1 win. It was the SAP United States Grand Prix at Indianapolis Grand Prix Circuit on June 19th.
There were 19 F1 races in 2013.
None.
Niki Lauda won 25 Formula 1 races in his career.
Jacques Villeneuve won 11 Formula 1 races in his career.
Keke Rosberg was active in Formula 1 from 1978 to 1986 and in that time he won five races and one championship (1982) in 114 starts. His last race was the Australian Grand Prix in 1986 which was won by Alain Prost.
Once a year.
Once a year.
Once a year.
Twice a year.
Once a year.
Once a year.