Years That Can and Years That Cannot Pass For Today

2018-2019, almost the same .5-2 percent difference - the .5-2  percent difference are the small pop cultural 20-2021 modifications. Personally I feel there is a .5 to 1 percent difference in popular culture, but can range depending on how you see it. 

Also to some extent 2015-17 but only in a general not precise way, it's only like a 2-4 percent difference - 2-4 percent are things that are dated, almost gone or no longer seen as much. I feel there is a 2.5, almost 3, percent difference from 2015, but it can range depending on how you see it.