Year	Percent
1950	10.3058
1955	7.73012
1960	8.95179
1965	10.23802
1970	9.30947
1975	6.98532
1980	9.19275
1985	8.94714
1990	8.92553
1995	7.97893
2000	8.22255
2005	6.04969
2010	5.73088
2015	5.56344
2020	5.70958
2025	5.38114
2030	5.2756
2035	5.17367
2040	5.07601
2045	5.06092
2050	5.12466
2055	5.14836
2060	5.11894
2065	5.08671
2070	5.06285
2075	5.06425
2080	5.08308
2085	5.09667
2090	5.07728
2095	5.03906
2100	4.99932