The relationship between number of companies by size class and contribution to total sector turnover is opposite: the firms in the sector that achieve a turnover of less than 2.5 million €/year (48.9% of firms – first class), contribute only 3.2% in realizing the sector result. 21.2% of companies achieve results between 2.5 and 5 million €/year (second class) and contribute 4.4% in total turnover. The companies in the third class (10.9 % of the industry), contribute 4.8 % in industry results, and finally the large enterprises with turnover over 10 million €/year (fourth class), generate most of the industry turnover (87.3 %).