Table:
text: Greg Sacks
NASCAR Sprint Cup Series
NASCAR Sprint Cup Series
Year_ Starts Wins Top_5 Top_10 Poles Avg_Start Avg_Finish Winnings Position_ Teams
1983 5 0 0 0 0 25.6 30.4 $8,060 47th #5 Sacks & Sons
1984 29 0 0 1 0 24.3 25.1 $75,183 19th #51 Sacks & Sons
1986 8 0 0 1 0 22.4 30.4 $64,810 41st #10 DiGard Motorsports
1987 16 0 0 0 0 23.6 29.8 $54,815 33rd #50 Dingman Brothers Racing
1990 16 0 2 4 1 18.6 20.8 $216,148 32nd #17/18/#46 Hendrick Motorsports
1991 11 0 0 0 0 27.5 30.4 $84,215 39th #18 Daytona Speed Inc. #47 Close Racing
1992 20 0 0 0 0 23.5 25.1 $178,120 30th #41 Larry Hedrick Motorsports

Question: Give the year for the 22.4 average start for Greg Sacks in the NASCAR Sprint Cup Series?