Year	Percent
1950	8.37291
1955	7.79739
1960	7.35382
1965	6.897
1970	6.52203
1975	6.37312
1980	6.26887
1985	6.11988
1990	6.41941
1995	6.18178
2000	5.718
2005	5.2719
2010	4.77519
2015	4.56045
2020	4.23223
2025	4.01736
2030	4.18978
2035	4.27642
2040	4.41378
2045	5.09753
2050	6.64137
2055	8.60909
2060	10.67051
2065	12.39288
2070	14.04126
2075	15.52759
2080	16.98138
2085	18.45467
2090	19.93455
2095	21.41638
2100	22.89199