Year	% of total imports
1995	2.075224801735428
1996	2.2180216209902945
1997	3.4387405757207152
1998	2.809375478273603
1999	3.075302337512236
2000	4.9352817599174665
2001	2.3284732616578174
2002	2.70437917256709
2003	2.419628328562737
2004	1.5831388449758128
2009	1.5371266464620452
2016	2.305369394820554
2017	1.8824018558879676
2018	3.074432351111368
2019	3.437835179192978
2020	1.8783119114818614