It has been more than a year since the S&P 500 went down 10%. In the nearly 17 years since March 2003, there have been 19 declines of 10% or more. There have been 82 declines of 5% or more.

Drawdown  Qty    Trading days Days since last
5%      82            4234              64
10%      19            4234             298
20%       5            4234             259
25%       2            4234            2731
33%       1            4234            2831