SLOVAKIA, 2017 year: Start with nice design, and as usually high quality printing, that just few countries around have.
Here we have, at first one really "simple & complicated" design for Holocaust victims, (Judaica topic too), than as usually Easter, and go forward with Power Plant, EUROPA, Writer/Educator, Holy Marry/religion, Physics and Nitra University.
If I need to make one best from this period, it will be Holocaust Victims, as it is a seemingly easy job to design this stamps, but one really hard and difficult task.
Second that I like is this Physics Olympiad, with one very modern design (reminds me of Leonardo and Michelangelo classic work).
You need any?