[Table] header: Season | Driver | Team | Engine | Poles | Wins | Podiums | Points | Margin of defeat row 1 : 1950 | Juan Manuel Fangio | Alfa Romeo | Alfa Romeo | 4 | 3 | 3 | 27 | 3
row 2 : 1951 | Alberto Ascari | Ferrari | Ferrari | 2 | 2 | 3 | 25 | 6
row 3 : 1952 | Giuseppe Farina | Ferrari | Ferrari | 2 | 0 | 4 | 24 | 12
row 4 : 1953 | Juan Manuel Fangio | Maserati | Maserati | 1 | 1 | 4 | 28 | 6.5
row 5 : 1954 | José Froilán González | Ferrari | Ferrari | 1 | 1 | 4 | 25.14 | 16.86
row 6 : 1955 | Stirling Moss | Mercedes | Mercedes | 1 | 1 | 3 | 23 | 17
row 7 : 1956 | Stirling Moss | Maserati | Maserati | 1 | 2 | 3 | 27 | 3
row 8 : 1957 | Stirling Moss | Maserati Vanwall | Maserati Vanwall | 1 | 3 | 3 | 25 | 15
row 9 : 1958 | Stirling Moss | Cooper Vanwall | Climax Vanwall | 3 | 4 | 5 | 41 | 1
row 10 : 1959 | Tony Brooks | Ferrari | Ferrari | 2 | 2 | 4 | 27 | 4
row 11 : 1960 | Bruce McLaren | Cooper | Climax | 0 | 1 | 6 | 34 | 9
row 12 : 1961 | Wolfgang von Trips † | Ferrari | Ferrari | 1 | 2 | 4 | 33 | 1
row 13 : 1962 | Jim Clark | Lotus | Climax | 5 | 3 | 3 | 30 | 12
row 14 : 1963 | Graham Hill | BRM | BRM | 2 | 2 | 5 | 29 | 25
row 15 : 1964 | Graham Hill | BRM | BRM | 1 | 2 | 5 | 39 | 1
row 16 : 1965 | Graham Hill | BRM | BRM | 4 | 2 | 6 | 40 | 14
row 17 : 1966 | John Surtees | Ferrari Cooper | Ferrari Maserati | 2 | 2 | 4 | 28 | 14
row 18 : 1967 | Jack Brabham | Brabham | Repco | 2 | 2 | 6 | 46 | 5
row 19 : 1968 | Jackie Stewart | Matra | Ford | 0 | 3 | 4 | 36 | 12
row 20 : 1969 | Jacky Ickx | Brabham | Ford | 2 | 2 | 5 | 37 | 26
row 21 : 1970 | Jacky Ickx | Ferrari | Ferrari | 4 | 3 | 5 | 40 | 5
row 22 : 1971 | Ronnie Peterson | March | Ford | 0 | 0 | 5 | 33 | 29
row 23 : 1972 | Jackie Stewart | Tyrrell | Ford | 2 | 4 | 5 | 45 | 16
row 24 : 1973 | Emerson Fittipaldi | Lotus | Ford | 1 | 3 | 8 | 55 | 16
row 25 : 1974 | Clay Regazzoni | Ferrari | Ferrari | 1 | 1 | 7 | 52 | 3
row 26 : 1975 | Emerson Fittipaldi | McLaren | Ford | 0 | 2 | 6 | 45 | 19.5
row 27 : 1976 | Niki Lauda | Ferrari | Ferrari | 3 | 5 | 9 | 68 | 1
row 28 : 1977 | Jody Scheckter | Wolf | Ford | 1 | 3 | 9 | 55 | 17
row 29 : 1978 | Ronnie Peterson † | Lotus | Ford | 3 | 2 | 7 | 51 | 14
row 30 : 1979 | Gilles Villeneuve | Ferrari | Ferrari | 1 | 3 | 7 | 47 | 4
row 31 : 1980 | Nelson Piquet | Brabham | Ford | 2 | 3 | 6 | 54 | 13
row 32 : 1981 | Carlos Reutemann | Williams | Ford | 2 | 2 | 7 | 49 | 1
row 33 : 1982 | Didier Pironi | Ferrari | Ferrari | 2 | 2 | 6 | 39 | 5
row 34 : 1983 | Alain Prost | Renault | Renault | 3 | 4 | 7 | 57 | 2
row 35 : 1984 | Alain Prost | McLaren | TAG | 3 | 7 | 9 | 71.5 | 0.5
row 36 : 1985 | Michele Alboreto | Ferrari | Ferrari | 1 | 2 | 8 | 53 | 20
row 37 : 1986 | Nigel Mansell | Williams | Honda | 2 | 5 | 9 | 70 | 2
row 38 : 1987 | Nigel Mansell | Williams | Honda | 8 | 6 | 7 | 61 | 15
row 39 : 1988 | Alain Prost | McLaren | Honda | 2 | 7 | 14 | 87 | 3
row 40 : 1989 | Ayrton Senna | McLaren | Honda | 13 | 6 | 7 | 60 | 16
row 41 : 1990 | Alain Prost | Ferrari | Ferrari | 0 | 5 | 9 | 71 | 7
row 42 : 1991 | Nigel Mansell | Williams | Renault | 2 | 5 | 9 | 72 | 24
row 43 : 1992 | Riccardo Patrese | Williams | Renault | 1 | 1 | 9 | 56 | 52
row 44 : 1993 | Ayrton Senna | McLaren | Ford | 1 | 5 | 9 | 73 | 26
row 45 : 1994 | Damon Hill | Williams | Renault | 2 | 6 | 11 | 91 | 1
row 46 : 1995 | Damon Hill | Williams | Renault | 7 | 4 | 9 | 69 | 33
row 47 : 1996 | Jacques Villeneuve | Williams | Renault | 3 | 4 | 11 | 78 | 19
row 48 : 1997 | Heinz-Harald Frentzen | Williams | Renault | 1 | 1 | 7 | 42 | 39
row 49 : 1998 | Michael Schumacher | Ferrari | Ferrari | 3 | 6 | 11 | 86 | 14
row 50 : 1999 | Eddie Irvine | Ferrari | Ferrari | 0 | 4 | 9 | 74 | 2
row 51 : 2000 | Mika Häkkinen | McLaren | Mercedes | 5 | 4 | 11 | 89 | 19
row 52 : 2001 | David Coulthard | McLaren | Mercedes | 2 | 2 | 10 | 65 | 58
row 53 : 2002 | Rubens Barrichello | Ferrari | Ferrari | 3 | 4 | 10 | 77 | 67
row 54 : 2003 | Kimi Räikkönen | McLaren | Mercedes | 2 | 1 | 10 | 91 | 2
row 55 : 2004 | Rubens Barrichello | Ferrari | Ferrari | 4 | 2 | 14 | 114 | 34
row 56 : 2005 | Kimi Räikkönen | McLaren | Mercedes | 6 | 7 | 12 | 112 | 21
row 57 : 2006 | Michael Schumacher | Ferrari | Ferrari | 4 | 7 | 12 | 121 | 13
row 58 : 2007 | Lewis Hamilton | McLaren | Mercedes | 6 | 4 | 12 | 109 | 1
row 59 : 2008 | Felipe Massa | Ferrari | Ferrari | 6 | 6 | 10 | 97 | 1
row 60 : 2009 | Sebastian Vettel | Red Bull | Renault | 4 | 4 | 8 | 84 | 11
row 61 : 2010 | Fernando Alonso | Ferrari | Ferrari | 2 | 5 | 10 | 252 | 4
row 62 : 2011 | Jenson Button | McLaren | Mercedes | 0 | 3 | 12 | 270 | 122 [/Table] Answer this question based on the above table: How many seasons was clay regazzoni the driver?

Answer: 1.0