I hope the OP already read the post of coingecko as the graph will give him a clear understanding on what is happening during halving. But would be nice to see also the corresponding price on the graph so we will see how much bitcoin's price changes during those times of halving. Though we already know that the price really increased after halving but this time, I don't think the performance in terms of increase will be similar in previous halvings.
it is not going to be similar cause it can surpass the past increase?
If you are going to look at the chart and see the history for halving there's always a pump every halving and this time it's actually happening again! If you are updated at the price of bitcoin is jumps from 6900 to 8700 in just one week! So I am sure that the halving this year is gonna be awesome and will actually surpass the past halving's when it comes to bitcoin price.
I do not intend to break your optimism about the halving that will occur next week, the past halving which occurred last 2016 is very different especially to the price, the price of bitcoin back then is less than a thousand dollars so it won't be surprising at all to reach it around $1000 to $15000 after a year which is I'm skeptical right now, if we base our speculation from that then we are suppose to have a new ATH this year. Nevertheless I'm hoping that this year's halving will result in greatness which is what we need in times where its neighbor market is down, it's time to shine for bitcoin.