I am not sure we are talking about the same thing. Are you saying numbers are falling ? Or are you saying growth is slowing ? Even slowing growth is growth. I can't see how both statements can be true at the same time. While it makes sense that at some point there is saturation and plateauing, we aren't there. I can guarantee you that there has been a lot of growth in ccTLD over the last 15 years. They are doing so badly that they have become dominant in different countries... especially over the last 15 years. These are the stats for .nl for example, you can usually find similar statistics on the respective national registries websites.