This is the record of carbon dioxide increase over the period Mauna Loa Laboratories have existed, The chart is approximately 44 years. The interesting aspect to this chart is the incease in incline. It is not a straight line increase. The 'saw tooth' pattern is the decrease of the blooming of the Northern Hemisphere beginning with Spring into Summer when the CO2 is being used. The Northern Hemisphere has larger land masses than the Southern Hemisphere which has larger oceans.