I made a graph where I take the sum of the last twelve months. In the first twelve months you'll see an increasing line, and afterwards it stays more or less on the same level because then you always have twelve months of data. Now I would only like to see my graph from the first point where I have twelve months of data. I tried to fill in a formula in the minimum for the x-axe. Can someone help me with this formula. On the x-axe I have 'MonthYear'.
