About 30% of world cotton production is harvested by machines. Australia, Israel and the USA are the only countries where all cotton is picked by machines. Machine picking is increasing in Argentina and Brazil. Machine picking may be adopted in Turkey in the next few years. Picking costs greatly vary among countries. About 85% of total cotton in the world in ginned on saw gins. Most countries have either large scale saw ginning or roller ginning, although small scale roller ginning does exist in some countries. Among the major cotton producing countries of the world, India and Turkey are the only countries where saw ginning and roller ginning are popular. Ginning is most expensive in Spain followed by Argentina, Zimbabwe, Australia and Colombia. Ginning is heavily subsidized in China (Mainland).