Congratulations, that is 5.6 years !! We all hope you were/are treated as a Family, Over the years and in many case that was my experience, hope it does not change.
My problem with calculating nights is that most of my stays are at MEA and you only get 1 night credit for every 3 nights actually stayed. Having said that, I have stayed at one particular MEA for more than a total of 5 years so my grand total of nights lifetime is also in the 2,000 range.