Add "Total Valuation" across members to stats page

It would be nice to have an chart that represented the aggregate value of CNCF member companies over time that represents a rough TAM of the market, I believe we had this in the old landscape, e.g., "You are viewing 253 cards with a total of 91,121 stars and funding of $36.5B"

However, instead of just total funding (which we should have on the stats page somewhere), I'd like to see the valuation of our members companies listed.