When you're looking for "Dukoscopy" - spell it "Dukascopy" - it will work better !
I got 1 minute data from them back to 2000, but it is not that good, There are a lot of "Minutes" missing. That you can find by subtracting the "390" in your example from the next - ie the "640" and so on down the list. The answer should be a constant - however in the "Tick data" the flow is by volume not by time, so that method will not work.
[Edit - I haven't been on dukascopy for a while, but as I remember, there is a modest charge for tick data, and I have not used it, so it is purely from memory a) that they do tick data and b) that there is a charge for "Tick" ]