Getting day by day lighning count data for last few years

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I was looking all over the internet and could not find any graph or dataset containing for number of lightning per year for last few years/ decade.
I'm trying to figure out is there a correlation between changes of average world temperature and number of lightning.  Is it possible to get such data from you?
I assumed such data is readily available somewhere on the net but only thing I found is number of fatalities.

Check NASA, ESA websites.