 as we have been talking about the annual growth rate and as I told you, it is very very important to know the annual growth rate because we have to know the annual growth rate of different countries and we will be able to project based on this we will look at the annual growth in the past we will look at the current annual growth and we will be able to project and predict what can happen in the future how much change can be made how many people will be added up along with that, simultaneously we will look at the resources we can see the scarcity of resources in front of us so the annual rate of change of population now what is the annual growth rate if we define this now we have seen the growth rate the annual growth rate it is an annual salana average rate rate of change of population size for a given country territory or a geographic area during a specified period in some country's territory in a certain time period the annual rate of change in the population size we will look at the annual growth rate it expresses what does it express it express the ratio between the annual increase in the population size and the total population for that year and it is usually multiplied by 100 there are three things it expresses the ratio between the annual increase in the population number one and it will express the total population for that year in that one year how many population can increase and we will multiply it along with the figure of 100 global human population growth this amount to around 83 million annually or 1.1 per year if we talk about global human population then according to 1.1 per year 83 million people in this increase is happening every year which is quite huge the global population it has grown from 1 billion the same thing in the past black of technology and whatever our conditions were of human beings so 1 billion were in the 18th century and today we see that in 200 years our population by 2020 we have reached 7.8 billion it is also expected to keep growing and this is the expectation that it will continue to grow and estimates have put the total population by 8.6 billion by mid 2020 now see because I have told you that underdeveloped developing regions will be much more responsible to increase the world population so we will touch 8.6 billion by 2030 9.8 billion we will do that by 2050 if this and how we know this we will know this along with those trends when we will see the growth rate of the population 11.2 billion by 2100 that is something very huge that is lots and lots of pressure on today's planet earth and the annual increase of the population size when the annual increase of the population size we will define this as sum of difference we will see the difference we will see the difference between birth less death and the difference between immigrants less immigrants in immigrants you know who go to other countries for some time for the permanent settlement for some time for the partial settlement so all these things when we will see the birth less death immigrants less immigrants in any country we will have annual increase in the population size population growth rate is generally at both national and sub national represent a fundamental indicator of course how can we make any decision how a planning can be made how a policy can be made for the people because there is a state and people live in that particular state and state has to make responsibility for its people but how can a state make responsibility for its people if it doesn't know about how many people are living and that's you know a state and how many people can be added and according to that we will make our policy planning if 10 people come to your house and we are supposed to cook food for them then we cook food for them because we are expecting 10 people and we will expect if 25 people are coming there will be a hell of difference between the preparation for the people who are 10 and now 25 so these are simple examples that is why the growth rate is very high and the hard country is very concentrated now let's talk a little statistical about the population data that the United Nations is a linear estimate and it is obtained linear interpolating from the corresponding rate or every 5 years population projections unit of the measurement of annual population growth is in percentile annual growth rate of the world if we talk about 2019 it was 1.1 annual growth rate of the high income countries was 0.4 in 2019 annual population growth rate middle income countries which are developed and under development that was 1.2 in 2.9 as well the world bank resource 2020 and annual growth rate of low income countries was 2.6 in the 2019 if we talk about the top advanced country of the world like USA the annual population growth rate of USA is 0.5% in 2.19 and if we talk about Pakistan the annual growth rate of Pakistan was 2.0 in 2019