Although the periodicity of the cycle is shorter, it does seem as invariable as that of climate change itself. "We are going to die from cooling", "we are going to die from warming", seems to follow a roughly 20 year cycle, at least as far back as my current news article search goes ( circa 1900 ). The hard thing to keep in mind for those of the current AGW religion is that all of those claims, though antiquated now, were made using the best science of the time.
It boils down to what I call my two universal truths of life:
1) At any given point in history, there will always be someone making a pretty good living predicting the end of the world.
2) Virtually everything tastes better wrapped in bacon.