I'm sorry, I don't have any statistics for you.
We know that we are finding estrogens in water. Part of the presence of estrogens in the water is from the synthetic hormones in birth control pills. One of the things Health Canada is working on is an environmental assessment regime for pharmaceuticals to help control that. We're certainly concerned it adds to the load of estrogens in the environment that people are exposed to. Estrogens are both hormone disrupters and potentially cancer-causing.