We performed a comparative analysis for the year 1990 (after changing the communist regime in 1989, when the Decree 770/1966 was repealed which prohibited the interruption of pregnancy by request) and 2007 (when the generation of women born in 1967 reached the age of 40, leaving the age groups with high fertility), using indicators derived from the historical analysis of the events. The analysis shows a deficit of 100 008 live births (31.84 %) in 2007 compared with 1990. This decrease is explained by changes in general fertility and the size of the quota of women of childbearing age. The comparison of 2007 to 1990 did not lead to any compensation of the demographic indicators due to the quota of fertile contingent, because until 2007 the quota of women of childbearing age diminished.