Prague, Aug 18 (ČTK) - The average monthly gross income of teachers in the Czech Republic grew to CZK 43,318 last year, CZK 3,600 more year-on-year. But while the teachers' salaries rose by 40 percent in the past three years, this pace slowed down in 2020, Jan Cieslar a spokesperson for the Czech Statistical Office (CSU) told ČTK today.