Find the best solutions to your problems with the help of IDNLearn.com's expert users. Our experts are ready to provide in-depth answers and practical solutions to any questions you may have.

Year(x) 1971
Percent(y) 42.4
1978
37.4
1980
37.1
1984
34.1
1989
32.1
1993
28.8
1997
25.7
2000
25.5