Structure of population (%) according to basic age groups    

Age	1991	1992	1993	1994	1995	1996
pre - productive	24,58	24,07	23,54	22,89	22,27	21,65
productive	58,09	58,55	59,06	59,64	60,19	60,72
post-productive	17,33	17,38	17,40	17,47	17,54	17,63