Product supplement D dated April 1, 2016: http://www.sec.gov/Archives/edgar/data/1159508/000095010316012303/crt_dp64671.pdf 

Prospectus supplement dated July 31, 2015: http://www.sec.gov/Archives/edgar/data/1159508/000095010315006048/crt-dp58161_424b2.pdf

Prospectus addendum dated January 1, 2016: http://www.sec.gov/Archives/edgar/data/1159508/000095010316009887/crt-dp62226_424b3.pdf

Prospectus dated July 31, 2015: http://www.sec.gov/Archives/edgar/data/1159508/000119312515273165/d40464d424b2.htm