Stills only.
US seems to account for 1/3 of my $$ on iStock, which is quite surprising as <5% of my content is US. However, it seems a lot of my bigger Getty sales are to the US, so that could explain it. Not sure how to tell what proportion of my sales is to the US.
In the GODs, November was always far and away my BMY, but not since 2013.
I have few sales to the US via Alamy, about 4% of my Alamy content is directly US based. However, again the payments to the US tend be higher (probably (RM only) due to larger circulation rates of publications there compared to here, but I don't know that for sure).
So for me, and to my surprise, the US is a significant market.