Table:
text: Jackie Oliver
Complete Formula One World Championship results
Complete Formula One World Championship results
Year_ Entrant Chassis Engine Pts_
1972 Marlboro BRM BRM P160B BRM V12 0
1973 UOP Shadow Racing Team Shadow DN1 Cosworth V8 4
1977 Shadow Racing Team Shadow DN8 Cosworth V8 0

text: Jackie Oliver
Complete Formula One World Championship results
Complete Formula One World Championship results
Year_ Entrant Chassis Engine Pts_
1967 Lotus Components Ltd. Lotus 48 (F2) Cosworth Straight-4 0
1968 Gold Leaf Team Lotus Lotus 49 Cosworth V8 6
1968 Gold Leaf Team Lotus Lotus 49B Cosworth V8 6
1969 Owen Racing Organisation BRM P133 BRM V12 1
1969 Owen Racing Organisation BRM P138 BRM V12 1
1969 Owen Racing Organisation BRM P139 BRM V12 1
1970 Owen Racing Organisation BRM P153 BRM V12 2
1970 Yardley Team BRM BRM P153 BRM V12 2
1971 Bruce McLaren Motor Racing McLaren M14A Cosworth V8 0
1971 Bruce McLaren Motor Racing McLaren M19A Cosworth V8 0

Question: What's the last year the shadow racing team scored more than 0 points in Jackie Oliver?