Although the number of stages is 1,491, there have been 1,492 leader's jerseys awarded, because after the first stage of the 1948 Vuelta a España, Bernardo Ruiz and Julián Berrendero shared the lead and both received the leader's jersey.
The "Leader's jerseys" column gives the number of days that the cyclist wore the leader's jersey, the "Vuelta wins" column gives the number of times that the cyclist won the Vuelta.
For example: Alex Zülle has spent 48 days in the leader's jersey, and won the overall classification two times.
"Vuelta wins" stands for the number of Vuelta wins by cyclists of that country, "Points" for the number of times the points classification was won by a cyclist of that country and "KoM" for the number of times the mountains classification was won by a cyclist of that country.
The "Different holders" column gives the number of different cyclists of the country that wore the leader's jersey.