The scheme created by Act No. 23.548 was automatically extended every year after 1989 and is still in
force. However, during the 1990s, several laws were passed that modified the scheme. There were also
sweeping changes in the relationship between the national government and the provinces, namely, the
complete decentralization of educational and health services together with a major reform in the social
security system. Thus, the parameters established in Act No. 23.548 provide no more than a very poor 10
indication of the actual shares received by each province in later years.10 During the 2000s, a further set
of regulations introduced more changes into the system. In December 2011, for instance, the revenues
covered by Act No. 23.548 represented 78% of the total transfers received by the provinces; the
remaining 22% was transferred under the terms of another nine supplementary laws.