Is there a symbol or way of writing "in between" or "up to" for a year on a timeline graph?

I am making a timeline and every point is one specific year (1965, 1975, 1982, 1985, 1986) except for one point which is a range "1987-2014". Having one data point that's double the size of the others breaks the design and I'd like to show something like "...2014" or "< 2014" or "–2014" to use less space but I'm not sure what's correct or most readable.

• How about '87-'14? Apr 14 '21 at 19:29
• Let the break happen if every point presents something which characterizes a time period. Most of the time periods are one year long, but the one is 28 years. Let's assume you have a bar chart of the number of the months in the given periods. All one year long periods have a 12 units long bar, but the one has a 336 unit long bar in linear scale. Nobody is surprised when they see that the peak is based on longer time. Apr 15 '21 at 10:52
• What happens if you use vertical (not stacked) year labels? Then the horizontal interval between the years (and data points) is not irregular.
– Stan
Sep 13 '21 at 19:10