Where is the bottom?

I remember as a young boy going on a tour of a cave with my family. At one point the guide tossed a stone into an abyss alongside the path we were taking through the cavern. I don't remember how deep he said the hole was, but I do recall that it seemed to fall a long time before it stopped bouncing off the sides of the crevice and finally splashed in water in the darkness below. I don't want this blog to become a monthly report on the currency crisis facing missionaries, but where is the bottom already? I read a headline today that said the dollar has been almost level against the euro for the last three months. That is surely good news for American missionaries serving in Europe! However against the Brazilian Real the dollar has continued its decline, falling almost ten percent over the same period. Over the last four years about a 50% decline. For us, the frustration is that though we have gained some support, our annual support need is almost $2000 higher this month than it was last month, and we have actually dropped from 78% supported to 77%. We do appreciate your prayers for our family as we seek to follow the Lord.
your brother and co-worker,
Steve Nash