Lost Decade: "S&P 500 is down 39.22% from Dec. 31, 1999 through Monday’s close"

Things that make you say "Hmmm".
From EconompicData:

...Annualized, stocks lost 5.12% so far this decade;
in the 1930s decade of the Great Depression they lost 5.26%....

Go to Econompic for their cheery (really!) commentary.