I made a mistake as it was, not back to 89 only back to 01, couonting this year as well. But still around 6%.
I went back to 1995-96 season and found 681 OT games out of 10944 (including this year/AND those two tonight as well). So that is 6.2%. So overall it is going to be around 6%.
Yes own database, that is how I screwed up. I knew I didn't have nearly enough games for 15 years there:sad3: .