My first point is that you can only pass what is put in front of you. So assuming you have done well, be proud of yourself.
Now whether or not "A" levels have got easier, The following is a statement of fact.
"The percentage of students passing 'A' levels has risen year on year for the last 27 years."
This year 27% of examination entries achieved the highest grade possible with one in eight students getting straight As.
Employers must rely on the public examination to do two things, The first is to establish that a student has reached a standard of knowledge about a particular subject. The second is where a problem now exists, which is to help distinguish between candidates. At present our "A"level system does not do this.It should and the press should be shouting about this failing.
There have already been several very good comments on why more people are achieving these grades. The only one I can think of which may have been missed is this. There are three main examining boards which compete for entries. Whether they make money is entirely dependent on whether schools choose their syllabuses. Schools are under a constant financial pressure to achieve the highest grades and will choose the syllabus that they think will give their students the best chance of passing. So, the entire financial pressure of the schooling systems is on exams getting easier. Sadly in my experience if the financial pressure is for something to get easier, it probably will.
My last comment, every generation that has sat "A" levels has worked incredibly hard. Don't kid yourself otherwise.