I'm interested in the correlation (in the recent years, or even decades) between the silver (and maybe gold) prices and some stock market index. In other words, I'd like to know how strong is the correlation between the stock market (eg. some USA index) going up/down and the silver price going up/down. I'm not interested in explanations why it is (or isn't) or should be (on shouldn't be) correlated; I'm interested in historic numbers (and/or charts).
I've been trying to find this data somewhere, but with no success yet.