TABLE 1.

Durum production trends in the United States over the last 20 years (USDA National Agricultural Statistic Service database).

State	Area planted in 2018	Average annual growth or reduction in area planted since 1998†	Average yield over of the period	Average annual yield increase since 1998‡
	(ha)	(ha year–1)	(t ha–1)	(t ha–1 year–1)
Arizona	28,745	801	6.74	0.031
California	16,194	−338	6.74	−0.037
Montana	340,081	5,176	1.85	0.021
North Dakota	445,344	−39,734	2.12	0.040

^†Derived from the linear regression of hectares planted, 1998 through 2018. ^‡Derived from the linear regression of average statewide yield, 1998 through 2018.