If I have 1% of the world supply of US dollars, and I decide to sell all of them to buy Euros, how much should I expect the exchange rate to change? Is there some kind of empirically determined price elasticity of demand that I could use to predict this? I've tried looking this up but I haven't been able to find it.
I'm also interested in the long run price elasticity of demand. Eg, how much should I expect my 1% USD sale to affect the price of USD in a year?