The bar chart below shows the number of students in three different courses from 2001-2004. Identify the main trends and summarize the data

A glance at the bar chart provided reveals the number of students who studied in three courses during the period from 2001 to 2004. Overall, what stands out from the graph is that the course illustrates the highest level in three of four years.
Looking at the details, as regards, course a rate started at around 4 million in 2001 then having remained at the same share in 2002. Next year it experienced a marginal decline before climbing to 4 million in 2004. Meanwhile, in 2002 course b share was an around 2million and continued levelled off at the same level next 3 years but a slight fluctuation. Likewise, course c provided the lowest share in 2002 approximately 2 million but it witnessed a steeply rise over the next 2 year. Finally, its rate peaked at 5 million in 2003 which meant it had the highest of three in that year.

Votes
Average: 6.1 (1 vote)

Grammar and spelling errors:
Line 1, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
A glance at the bar chart provided revea...
^^^
Line 2, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...highest level in three of four years. Looking at the details, as regards, cour...
^^^
Line 2, column 164, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...hare in 2002. Next year it experienced a marginal decline before climbing to 4 mi...
^^
Line 2, column 456, Rule ID: A_RB_NN[1]
Message: You used an adverb ('steeply') instead an adjective, or a noun ('rise') instead of another adjective.
...pproximately 2 million but it witnessed a steeply rise over the next 2 year. Finally, its rate...
^^^^^^^^^^^^^^

Transition Words or Phrases used:
but, finally, likewise, look, then, while, as regards

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 2.0 7.0 29% => More to be verbs wanted.
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 3.0 6.8 44% => More conjunction wanted.
Relative clauses : 4.0 3.15609756098 127% => OK
Pronoun: 6.0 5.60731707317 107% => OK
Preposition: 29.0 33.7804878049 86% => OK
Nominalization: 1.0 3.97073170732 25% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 684.0 965.302439024 71% => OK
No of words: 151.0 196.424390244 77% => More content wanted.
Chars per words: 4.5298013245 4.92477711251 92% => OK
Fourth root words length: 3.50545371207 3.73543355544 94% => OK
Word Length SD: 2.51051907415 2.65546596893 95% => OK
Unique words: 91.0 106.607317073 85% => More unique words wanted.
Unique words percentage: 0.602649006623 0.547539520022 110% => OK
syllable_count: 194.4 283.868780488 68% => OK
avg_syllables_per_word: 1.3 1.45097560976 90% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 1.53170731707 65% => OK
Article: 1.0 4.33902439024 23% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 1.0 3.36585365854 30% => More preposition wanted as sentence beginning.

Performance on sentences:
How many sentences: 7.0 8.94146341463 78% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 21.0 22.4926829268 93% => OK
Sentence length SD: 19.6935708975 43.030603864 46% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 97.7142857143 112.824112599 87% => OK
Words per sentence: 21.5714285714 22.9334400587 94% => OK
Discourse Markers: 7.57142857143 5.23603664747 145% => OK
Paragraphs: 2.0 3.83414634146 52% => More paragraphs wanted.
Language errors: 4.0 1.69756097561 236% => Less language errors wanted.
Sentences with positive sentiment : 3.0 3.70975609756 81% => OK
Sentences with negative sentiment : 1.0 1.13902439024 88% => OK
Sentences with neutral sentiment: 3.0 4.09268292683 73% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.183073869961 0.215688989381 85% => OK
Sentence topic coherence: 0.095611209859 0.103423049105 92% => OK
Sentence topic coherence SD: 0.11236271794 0.0843802449381 133% => OK
Paragraph topic coherence: 0.197497095797 0.15604864568 127% => OK
Paragraph topic coherence SD: 0.131754704009 0.0819641961636 161% => OK

Essay readability:
automated_readability_index: 10.7 13.2329268293 81% => Automated_readability_index is low.
flesch_reading_ease: 75.54 61.2550243902 123% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 7.9 10.3012195122 77% => OK
coleman_liau_index: 8.99 11.4140731707 79% => OK
dale_chall_readability_score: 7.82 8.06136585366 97% => OK
difficult_words: 30.0 40.7170731707 74% => More difficult words wanted.
linsear_write_formula: 10.5 11.4329268293 92% => OK
gunning_fog: 10.4 10.9970731707 95% => OK
text_standard: 11.0 11.0658536585 99% => OK
What are above readability scores?

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More content wanted.

Rates: 61.797752809 out of 100
Scores by essay e-grader: 5.5 Out of 9
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.