You have left out many facts that need to be addressed. While food production has increased, food quality has decreased. In order to grow more, we have modified our agriculture. GMO's are prevalent in the food chain and the run-off from fertilizers in many cases has resulted in the contamination of local groundwater sources which in turn are causing health issues for the residents in these communities that use well water. Vegetables today which are mass-produced are not nearly as rich in nutrients as produce grown 50 years. These conditions have led people back to organic alternatives, and don't even get me going on the meat industries, anti-biotics, steroids, chemical feeds. Remember whatever they eat you're basically eating too! So let us look now at what it cost to eat if you don't want to eat pre-processed or mass-produced unhealthy foods. Hmmm, guess we just added about 30-50% cost to eat quality food that won't cause cancer or birth defects over the course of your lifetime. Seems like there is a cost involved with your analysis that you failed to include - oh now let us add in the cost of medical bills for later in life from eating a poor quality diet of GMO's, antibiotics, steroids, and the rest. WOW, food just got really expensive!!! Now add to all THAT inflation and look again at what happens to your chart. Beef prices in stores are up by 20-30% where I live, produce is up about 8%, chicken is creeping higher at about 5%, fish is through the roof, dairy products 7-10%. Nah my disposable income is indeed eaten up by an ever-increasing grocery bill. I'm upvoting you but not for the accuracy of content but because of your sincerity and the time you put into writing a posting.

Another thought about world population - at some point, the scale will tip and we will no longer be able to produce enough to feed everyone. When that starts to happen the food supplies will hyper-inflate and people WILL begin to starve. With more people comes less land for agriculture, less land means less production. Fortunately, at current rates of growth, you and I will not be here to experience those times but it will start accelerating at some point, the more people the more births. Sorry for being a buzz kill but that is mathematics and science,