The pie chart illustrates the proportions of various materials chosen for processing forks in the 100-year period, starting from 1900. Overall, most of the surveyed materials witnessed a downward trend, except for the gold. Additionally, in the given period, the invention of forks made of steel and copper was seen.
Beginning with the material accounted for the the largest manufacture in 1900, the figure for wood began at 47%, however, it dropped remarkably to only 17% in 2000. Similarly, 17% fork were made of silver in the first researched year, after which its percentage nearly halved after a hundred years. The figure for iron also saw the same changes, which declined by 12% throughout the twentieth century. Conversely, starting at 6% in 1900, an incline by 4% in the production of gold forks was witnessed, nevertheless, it was still one of the least prioritised materials in making forks.
Fork evolution observed the presence of copper and steel forks, both of them were the key products of large number of manufacturers, but to varying extent. Although the establishment of steel forks came later, its figure rocketed to 30% in during the studied period. Copper in processing forks did not exist until later 1900, relatively identical to steel, it was also rise in the percentage of this material used for producing, but to a lessen level, by 17%.