trip cost estimates 2010-2023

[mle2718]

need to add updated info on trip costs.

READ-SSB-metadata/Trip_Costs.md

Lines 1 to 17 in 99570b8

	# Predicted Trip costs
	Predicted Trip costs are stored on the network.
	Here is a bit of R code that you can use to read in that data:
	```
	socialsci_dir<-full.path.to.social.sci.directory
	cost_directory1<-file.path(socialsci_dir,"Trip_Costs","2000-2009")
	cost_directory2<-file.path(socialsci_dir,"Trip_Costs","Archived","2010-2021")
	cost_directory_new<-file.path(socialsci_dir,"Trip_Costs","2010-2022")
	Cost_Part1 <- read_excel(file.path(cost_directory1,"2000_2009_Commercial_Fishing_Trip_Costs.xlsx"), sheet=1)
	Cost_Part2 <- read_excel(file.path(cost_directory1,"2000_2009_Commercial_Fishing_Trip_Costs.xlsx"), sheet=2)
	Cost_Part3 <- read_excel(file.path(cost_directory_new,"2010_2022_Commercial_Fishing_Trip_Costs.xlsx"))
	```