Your comment made me curious. I downloaded the complete last month (February). 28 days, every day has a gzipped json file which is on average 86MB. Summarized it is 53GB of gzipped jsons for 28 days. Roughly 700GB gzipped per year. Didn't have the chance to ungzip them all.
Are we talking 1TB/year, 10TB/year, 100TB/year?