Table 2.

Percentages of happiness states among friends.

	YES, I am happy	NO, I’m not happy
Educational level
0 = Lower than primary education	1.89%	5.22%
1 = Primary education	2.01%	4.64%
2 = First stage of secondary education and similar	11.97%	17.40%
3 = Second stage of secondary education and similar	11.96%	10.88%
4 = Non-higher post-secondary education	0.07%	0.02%
5 = Higher level vocational training, plastic arts and design and sports studies and equivalent; own university degrees that require a high school certificate, of an equal or greater duration of 2 years	5.45%	4.52%
6 = University degrees of more than 240 ECTS credits, university diplomates/junior college graduates, own university degrees as an expert or specialist, and similar	5.26%	4.64%
7 = University degrees of more than 240 ECTS credits, bachelor’s degrees, master’s degrees and specialties in Health Sciences through the residency system, and similar	7.05%	5.62%
8 = Doctoral studies	0.47%	0.40%
Profession
0 = Military occupations	75.46%	24.54%
1 = Directors and managers	47.77%	52.23%
2 = Technicians and scientific professionals and intellectuals	58.23%	41.77%
3 = Technicians, support professionals	55.28%	44.72%
4 = Accounting, administrative and other office employees	52.18%	47.82%
5 = Catering, personal, protection and sales service workers	43.35%	56.65%
6 = Qualified workers in the agricultural, livestock, forestry and fishing sectors	43.72%	56.28%
7 = Skilled workers from the manufacturing industries and construction (except installation and machinery operators)	43.95%	56.05%
8 = Facility and machinery operators, and assemblers	45.02%	54.98%
9 = Elementary occupations	42.57%	57.43%
Income
€0.00	45.43%	54.57%
<450€	38.82%	61.18%
€451–€900	35.87%	64.13%
€901–€1,600	44.93%	55.07%
€1,601–€2,500	52.39%	47.61%
€2,501–€3,000	53.08%	46.92%
3,000 < €	56.19%	43.81%