5. In a sealed laboratory, initially there are 1000 bacteria of a certain species, and they reproduce at a rate of 8\% per hour. If reproduction continues at this rate, which of the following options best approximates the number of bacteria after 100 hours?\\
(1) 9 thousand\\
(2) 108 thousand\\
(3) 2200 thousand\\
(4) 3200 thousand\\
(5) 32000 thousand