There is already a date selector in Sheets (clicking a date in a cell brings up a date picker), but navigating back several years can be cumbersome because it only lets you scroll through the months. If it were also possible to change the year - either by typing it in or by scrolling through the years - that would be much faster. I know it’s possible to type the date, but using the date picker is far easier for me (if this year-thing would be solved).