Citrus fruits are the highest-value fruit crop in terms of international trade. According to the UN Food and Agriculture Organization, world production of all citrus fruits in 2016 was 124 million tons, with about half of this production as oranges (Link). The main citrus producing regions include China (33 MT), the Mediterranean basin (25 MT) and Brazil (17MT). According to the USDA, National Agricultural Statistics Service (Link) Citrus utilized production for the 2017-18 season totaled 6.13 million tons, down 20 percent from the 2016-17 season and 66 percent lower than the record high production of 17.8 million tons for the 1997-98 season. Florida accounted for 36 percent of total United States citrus production; California totaled 59 percent, and Texas and Arizona produced the remaining 5 percent.
California Citrus Statistics (CDFA, 2018)