5 years seems like far too small of a window to accurately assess this. Was life better in 2010 than 2005? How about 1977 vs 1972? Or 1803 and 1798? A much lon

5 years seems like far too small of a window to accurately assess this. Was life better in 2010 than 2005? How about 1977 vs 1972? Or 1803 and 1798? A much longer time frame will be required to determine if life is improving over time for people or not. Possibly on the scale of generations.