I been trying to figure it out and can't,the best I have is I been doing it 27 years, and my best year was 16 and worst was 3 over the last 15 years, probabbly averaging 8. Before that I went between 1 and 5 a year. I really never kept good count. I know I lost a shoe box of beards and a whole string of spurs in a move several years ago.