NASA scientists are not bigots, and don’t focus all their data tampering attentions on just the US. Since 2007, NASA has increased the 1880-2006 global temperature trend by an amazing 37%, from 0.59 degrees per century up to 0.81 degrees per century.
2007 version http://data.giss.nasa.gov/gistemp/graphs/Fig.A.txt
2013 version : http://data.giss.nasa.gov/gistemp/graphs_v3/Fig.A.txt
Impressive work on NASA’s part – 0.22C/century of new cheats – just since 2007. By the time NASA and NOAA are done cooling the past, the 1930’s Dust Bowl will have been an ice age.