How Flowering and fruiting stage improves passion fruit productivity?

Once the passion fruit reaches the age of 12-13 months, it will continue to bloom throughout its life. As other flowers turn into fruits, other flowers are formed. It will continue for 3-4 years then its productivity will start declining. The fruiting phase will start from 12 or 13 months and continue for 3-5 years. As the plant ages, it will increase the number of fruits until it reaches its peak in the 4th year. Then, it will start to reduce the number of fruits produced.