The basic contribution was increased to GH₵ 0.50 (₵5,000.00) in February 2002 and GH₵2.50 (₵25,000.00) in October 2004.
In February 2008, the basic contribution was further increased to GH₵5.00 and then to GH₵10.00 in January 2011. Effective March 2014, the basic contribution was GH₵20.00 and in January 2015 it was increased to GHC30.00.
In February 2017, the basic contribution was GH₵50.00.
The basic contribution was further reviewed upwards to GHC100.00 with effect from January 2024.