diff --git a/data_analysis.py b/data_analysis.py
index 8a68813..4971121 100644
--- a/data_analysis.py
+++ b/data_analysis.py
@@ -26,3 +26,4 @@ for str_col in lst_column:
     # plt.show()
     # plt.close()
     plt.savefig(f'{str_col}.pdf', bbox_inches="tight")
+    plt.close()
diff --git a/out_f_avg_profit.pdf b/out_f_avg_profit.pdf
index ef20771..ba629e1 100644
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diff --git a/out_f_gini_profit.pdf b/out_f_gini_profit.pdf
index c50d90a..7a90939 100644
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diff --git a/out_w_avg_salary.pdf b/out_w_avg_salary.pdf
index 5946d3c..4181764 100644
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diff --git a/out_w_gini_salary.pdf b/out_w_gini_salary.pdf
index 6bcc439..5b6a8c7 100644
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diff --git a/out_w_percent_hired.pdf b/out_w_percent_hired.pdf
index 43ec28c..577d552 100644
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