Year	Percent
1950	9.57469
1955	8.48797
1960	8.75515
1965	11.43232
1970	12.78136
1975	12.79973
1980	12.42138
1985	12.07967
1990	11.39112
1995	11.23329
2000	11.2755
2005	10.67153
2010	7.9289
2015	7.07791
2020	7.32014
2025	7.47198
2030	7.12898
2035	6.81714
2040	6.13972
2045	5.62369
2050	5.50788
2055	5.60012
2060	5.64922
2065	5.56854
2070	5.3823
2075	5.20112
2080	5.14019
2085	5.19724
2090	5.26405
2095	5.25957
2100	5.17389