The chart below represents the proportion of four various materials (paper & cardboard, glass container, aluminum cans, plastics) which were recycled in a specific country for 28 years from 1982 to 2010. 
Overall, we could notice from the chart that, paper and cardboard were the most recycled material within the year 1990 to 1994 with an 80 percent ratio. However we could also depict from the same chart that the material with the least percent was plastic which was well under 10 percent in the year 1989, moreover, we could see that all the materials had the highest recycling ratio in 2008 apart from paper and cardboard which experienced a fall. 
With regards to paper and cardboard, the ratio decreased substantially to 2008 after it peaked at 80 percent in 1992. Likewise, glass containers which witnessed a slight fluctuation falling from 50 percent to 40 percent within the year 1982 to 1989 then increased substantially reaching it’s prime at 60 percent in the year 2008.
On the other hand, it was an upward trend for aluminum cans, which peaked at a little over 40 percent. Whereas, plastics, the least recycled materials with a little under 10 percent recycling ratio in the year 2009. 
The chart below represents the proportion of four various  
materials
 (paper & cardboard, glass container, aluminum cans, plastics) which  
were recycled
 in a specific country for 28 years from 1982 to 2010.  
 Overall
, we could notice from the chart that, paper and cardboard were the most recycled  
material
 within the  
year
 1990 to 1994 with an 80  
percent
  ratio
.  
However
 we could  
also
 depict from the same chart that the  
material
 with the least  
percent
 was plastic which was well under 10  
percent
 in the  
year
 1989,  
moreover
, we could  
see
 that all the  
materials
 had the highest recycling  
ratio
 in 2008 apart from paper and cardboard which experienced a fall.  
 With regards to
 paper and cardboard, the  
ratio
 decreased  
substantially
 to 2008 after it peaked at 80  
percent
 in 1992.  
Likewise
, glass containers which witnessed a slight fluctuation falling from 50  
percent
 to 40  
percent
 within the  
year
 1982 to 1989 then increased  
substantially
 reaching  
it’s
 prime at 60  
percent
 in the  
year
 2008. 
On the other hand
, it was an upward trend for aluminum cans, which peaked at a  
little
 over 40  
percent
. Whereas, plastics, the least recycled  
materials
 with a  
little
 under 10  
percent
 recycling  
ratio
 in the  
year
 2009.