Ga.-Pac. Corp. v. United States, 640 F.2d 328, 337 n.5 (Ct. Cl. 1980) (allowing post-taking data “for purposes of corroborating the reasonableness of the views of a . . . prospective purchaser and seller as to their anticipations” as of the date of taking); e.g., United States v. Certain Lands in Wappinger, 67 F. Supp. 905, 907-08, 909-11 (S.D.N.Y. 1946) (considering market trends); see Hickey v. United States, 208 F.2d 269, 277-78 (3d Cir. 1953) (“A witness may state that his conclusion on an initial examination was confirmed by later events, when additional information is available.”); United States v. 765.56 Acres of Land in Southampton (765.56 Acres I), 164 F. Supp. 942, 947 (E.D.N.Y. 1958), aff ’d sub nom. United States v. Glanat Realty Corp., 276 F.2d 264 (2d Cir. 1960) (noting “zoning regulations [that] had been under consideration .