Gibraltar Socialist Labour Party
Parliament of Gibraltar
Table:
Election year	# of overall votes^	% of overall vote^	# of overall seats won^	±^

1980	N/A	N/A	1 / 15	New

1984	32,534	34.2	7 / 15	6

1988	60,626	58.2	8 / 15	1

1992	65,997	73.1	8 / 15

1996	54,443	42.95	7 / 15	1

1999 (by-election; in alliance with the 'LPG')*	N/A (Backed the 'Liberal Party of Gibraltar' (GLP) candidate)	N/A	0 / 16 / 15	1

2000 (in alliance with the 'LPG')	29,610	25.62	5 / 15	1

2003 (in alliance with the 'LPG')	28,382	25.08	5 / 15

2007 (in alliance with the 'LPG')	49,277	31.84	4 / 17	1

2011 (in alliance with the 'LPG')	59,824	34.23	7 / 17	3

2013 (by-election; in alliance with the 'LPG')**	4,899	49.84	1 / 17 / 17

2015 (in alliance with the 'LPG')	70,551	47.83	7 / 17

^Each of these numbers are only based on how the GSLP performed in each [individual] election.

*The 1999 by-election in Gibraltar was to fill in a seat vacated by then-GSLP MP, Robert Mor, who died that year.

**The 2013 by-election in Gibraltar was to fill in a seat vacated by then-GSLP MP, Charles Arthur Bruzon, who died that year.

Having looked at the following table concerning the 'Parliament of Gibraltar' part of 'Gibraltar Socialist Labour Party', draft a brief sentence that explains what the highlighted cells show and format it within the following JSON object {"answer": "YOUR ANSWER"}.