Account for size of slope chart axes correctly
Account for size of slope chart axes correctly

OurWorldInData/owid-grapher,OurWorldInData/our-world-in-data-grapher,OurWorldInData/our-world-in-data-grapher,OurWorldInData/our-world-in-data-grapher,aaldaber/owid-grapher,aaldaber/owid-grapher,owid/owid-grapher,owid/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/our-world-in-data-grapher,aaldaber/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,aaldaber/owid-grapher,owid/owid-grapher,aaldaber/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher