Well, the W202, the model series you have, was introduced in 1993 and came to the US in 1994. However, this site seems to acknowledge it only beginning in 1995. Somehow that doesn't seem right.
Nonetheless, you might do well to ask your question in the W202 C-Class Discussion Forum
. I'm guessing that there weren't big changes in the engine and other items under the hood from 1994 to 1995.
More to the point of your question: You might try simply going to the full-service pump at a good service station and ask that they check the power-steering fluid and watch while they do it. If it is low, consult your owner's manual for the correct type to use in topping it off and don't over fill. However, I'm venturing a guess that it's more likely a loose belt and/or a loose mounting of the power-steering pump. Ask the attendant to give the pump a good shake and wiggle the belts if the fluid checks out ok. If anything's egregiously loose, it'll be readily apparent. While they're under the hood, with you watching, you should ask them to show you how to check the oil and transmission fluid also. Tipping the attendant a few bucks is appropriate for this level of attention.
A session under the hood with someone generally knowledgeable about cars could be very helpful to you.
Regardless of if it's fluid or loose items, you would do well to take your car to a trusted independent mechanic who is experience with Mercedes for service. Fluid shouldn't just disappear; if it's low there's probably a leak. Belts and pumps can come loose over time, but proper tension is important.
Welcome to BenzWorld. Enjoy your car. Please take the time to complete your profile, including year, model and location. That information can be very helpful to those who might offer help in the future.