History books are available too. The low sunspot counts and extra cold weather seem to
have occurred at the same time. Some people don't think it's a coincident.
The missing sunspots: Is this the big chill? - Science, News - The Independent
"Overall, during an 11-year solar cycle the Sun’s output changes by only 0.1 per cent, an amount considered by many to be too small a variation to change much on earth. But there is another way of looking it. While this 0.1 per cent variation is small as a percentage, in terms of absolute energy levels it is enormous, amounting to a highly significant 1.3 Watts of energy per square metre at the Earth"
1.3W, times how many sq meters?
I wonder how many BTUhs of heat has been lost since the sun went quite?