These results are much lower than those reported by Sánchez-Mata, Ca˘mara-Hurtado, Diez-Marquês, and
Torija-Isasa (2000), Hernandez et al. (2006) and Vidovic´ et al. (2008) but slightly higher than those reported
by Valente, Albuquerque, Sanches-Silva, and Costa (2011).