Each year, the number of people who want to know their serological status and use that service increases by 20 per cent; in the year 2005, 15,000 people were tested for HIV on a voluntary basis.
每年，想了解自己的血清状况和利用这种服务的人数增加了20％；2005年，有15 000人自愿接受了艾滋病毒检验。