econ = d3.csv("https://www.sfu.ca/~ridgez/IAT355_data/top%207%20plus%20canada%20partner%20plus%20world.txt", d => {
if (d["Period Code"] !== "A") return undefined;
if (!d["Product/Sector"].includes("Total merchandise")) return undefined;
return {
IndCat: d["Indicator Category"],
Ind: d["Indicator"],
RepEcon: d["Reporting Economy"],
ParEcon: d["Partner Economy"],
Year: d["Year"],
Value: d["Value"],
Sector: d["Product/Sector"]
};
})