But 92 and 2012 were completely different elections.
The only reasonable trend map is 2000-2016: similar margin, same outcome.
No 2000 and 2016 is not reasonable either , just look at the two nominees . In 2000 the Republicans nominated an Evangelical Neo Liberal from the Dallas suburbs while in 2016 Republicans nominated a bombastic socially moderate economic nationalist from the North East.
HW and Romney on the other hand are pretty similar and while there were differences between Obama and Clinton many of the perceptions were similar as well . Also 92-12 was the Blue Wall Dem Coalition era