I suggest that you look at ensembl

In general T(A) is more frequent than C(G), but the heterozygote CT is the most frequent genotype.

• C: 0.407 (2040)
• T: 0.593 (2968)
• C|C: 0.162 (406)
• C|T: 0.490 (1228)
• T|T: 0.347 (870) 

However, different populations have different distributions, which is why the distribution can be different and probably why there is differences in publications/databases. This is often the case when the minor allele frequency is high. You can pick the population most similar to the one you are studying at ensembl. 

http://www.ensembl.org/Homo_sapiens/Variation/Population?db=core;r=2:48962282-48963282;v=rs6166;vdb=variation;vf=5888