Try an example: The warmest year in recent history was 1934. 1931, 1938 and 1939 were in the top ten. However this cannot be discerned in the ground-based ice extent observations shown in your chart. 1953, the seventh warmest year...had the greatest sea ice extent, according to your chart!
Either the chart is flawed, or its association with average temperatures is flawed.
Only in the United States. I assume that the rest of your dates are for the U.S., and not the global values?
Anyway, sea ice is influenced by more factors than temperature, though temperature is important. And the values look pretty constant, so it would be hard to discern an overriding temperature influence, I would think.