May 30, 2001 Mitsui and Sumitomo Marine Group - Mid-Term Strategic Business Plan (Sheet 2) Growth Index (Based on each company's settlement materials) (Unit: Yen in billions or %) Direct Net premium income (1)Millea 2,465.9 (2)Sompo Japan1,692.6 (3)Mitsui Sumitomo 1,648.7 (4)Aioi 991.3 (% Increase) (1)Mitsui Sumitomo 1.2% (2)Sompo Japan - 0.3% (3)Millea - 1.6% (4)Aioi - 3.6% Net premium income (1)Millea 1,858.9 (2)Sompo Japan 1,268.5 (3)Mitsui Sumitomo 1,161.7 (4)Aioi 792.8 (% Increase) (1)Mitsui Sumitomo 2.3% (2)Sompo Japan 0.9% (3)Millea 0.8% (4)NIPPON KOA - 0.7% Notes: * "Net premium income" excludes ModoRich Fund (Good Results Return premiums). * Figures of Sompo Japan do not include those of Dai-Ichi Property & Casualty Insurance. Profitability Index (Based on each company's settlement materials) (Unit: Yen in billions or %) Loss ratio (1)Mitsui Sumitomo 58.4% (2)Sompo Japan 58.8% (3)Millea 59.9% (4)NIPPON KOA 61.7% Operating expenses ratio (1)Sompo Japan 36.4% (2)Millea 36.6% (3)Mitsui Sumitomo 37.3% (4)NIPPON KOA 37.4% % Improvement in Loss ratio (1)Mitsui Sumitomo 1.8% (2)NIPPON KOA 1.3% (3)Sompo Japan 1.2% (4)Aioi 0.9% % Improvement in Combined ratio (1)Mitsui Sumitomo 2.1% (2)Millea 1.8% (3)Sompo Japan 1.2% (4)NIPPON KOA - 0.9% Net investment income (1)Millea 88.2 (2)Mitsui Sumitomo 54.3 (3)Sompo Japan 37.2 (4)Aioi 24.8 Net income (1)Millea 54.2 (2)Mitsui Sumitomo 27.1 (3)Sompo Japan 21.1 (4)NIPPON KOA 13.6