15. The overall target degree of solvency, which cannot exceed 100%, corresponds:(1) at 31 December 2011 and at 31 December 2012, to the overall degree of solvency at 31 December 2010;
(2) at 31 December 2013, to the overall target degree of solvency at 31 December 2012, increased by one percentage point;
(3) at 31 December 2014, to the overall target degree of solvency at 31 December 2013;
(4) at 31 December 2015, to the overall target degree of solvency at 31 December 2014, increased by one percentage point;
(5) at 31 December 2016, to the overall target degree of solvency at 31 December 2015, increased by one percentage point;
(6) at 31 December 2017, to the overall target degree of solvency at 31 December 2016, increased by 2 percentage points;
(7) at 31 December 2018, to the overall target degree of solvency at 31 December 2017 increased by 3 percentage points;
(8) at 31 December 2019, to the overall target degree of solvency at 31 December 2018, increased by 2 percentage points.