text: The development of**skill levels**shows the most significant changes in the period between 2005 and 
  2020. When comparing 2005 with 2020, for most occupations**higher skills**are required. In this period, 
  the share of occupations requiring the three lowest education levels fell from 24.5% to 15.5%; the share 
  of occupations that require a tertiary education grew from 24.9% to 36.4%. 