Помогите пожалуйста . Не разбираюсь в временах это Past или Present simple ? Срочно !

Since 1989, Russian students have taken part in the international Olympiad in Informatics and are among the best. in 2000, the Russian team set a kind of record. Students won four gold medals and the world Cup in Informatics. Champions Cup Russian schoolchildren have won a few times

Мне кажется present simple...

В первом предложении Present. Во втором тоже. В третьем Past. В четвёртом тоже и пятом тоже Past.