Year	gross (GPI)
2000	1.25859999656677
2008	1.29848003387451
2010	1.31752002239227
2011	1.33782994747162
2012	1.26575005054474
2013	1.22797548770905
2014	1.23911166191101
2015	1.24855375289917
2018	0.766619980335236
2019	0.815540015697479
2020	0.796909987926483
2021	0.886730015277863
2022	0.83433997631073