December 2012 saw 3,286 sale and purchase agreements for residential units in Hong Kong, down 53.3 percent from November and down 23.6 percent year on year, according to the figures released by the city\'s Land Registry Thursday. The figures showed the total consideration for residential unit sale and purchase agreements for the month was 17.2 billion dollars (about 2.22 billion U.S. dollars), down 59.1 percent from November and down 33.1 percent year on year. The number of sale and purchase agreements for all building units was 9,129 in December last year, down 21.2 percent from November but up 63.1 percent year on year.