Calculation mistake on my side. Sorry.
Anyway, by saying that the birth of Mrs.Gandhi was a significant event and to say her defeat was an event even more significant, you are ignoring the fact that every year, at least "one" notable politician is born and every 5 years (some times, even less), there is a general election. Yes, independence was a crucial event and so was the mutiny, but you are basing your hypothesis on 2 available data points. Also, I would not be surprised if claims like, "1992 was a significant year because it was a dividing year between 1977 and 2007" starts to arise. Probabilities and inductions boundless, with the data available.