Since 1995: less than one percent per annum.

自1995年以来，生产力年化增长率 每年的增长一直低于1%。

From '73 to '83: three percent per annum.

在1973-1983年间， 生产力年化增长率为3%。

From '83 to '95: two percent per annum.

在1983-1995年间， 生产力年化增长率保持在2%。

This is an indication of success in terms of the work that we are doing here because currently the elephants are breeding at 10 percent per annum which is the maximum they can breed.

这表明我们在这里所做的工作取得了成功，因为目前大象的繁殖率为每年 10%，这是大象最高繁殖率。