Y= A F(KL)， 做老师给的EXCEL时候，发现一个概念有点混。。。老师在labor input一栏给了annual hours per worker, numbers of worker, total hours input,  我在计算factor growth，contribution to GDP growth rate, contribution to GDP per capita growth rate 时候对于L，用的应该是total hours input?还是 numbers of worker?