Out of 455 children adopted in 2011, only four were by gay or lesbian couples.
The 2011 figures reveal that only one gay couple and three lesbian couples adopted a child. In 2010, 12 same-sex couples (eight lesbian and four gay couples) adopted a child.
Fertility treatments, including IVF and donor insemination, have also been used by same-sex couples trying to conceive.
A total of 561 cycles of IVF were performed for women with a female partner in 2010 - about 100 more than in 2009, resulting in 215 babies being born.
A total of 1028 donor inseminations were carried out on women with a female partner, producing 152 babies in 2010.