Year	Percent
1950	10.45951
1955	10.82786
1960	11.07777
1965	11.34017
1970	9.38062
1975	9.53239
1980	11.49905
1985	10.97546
1990	10.49834
1995	11.10189
2000	10.61785
2005	11.8678
2010	11.00716
2015	10.46846
2020	9.82359
2025	8.94904
2030	8.63231
2035	8.31942
2040	8.03194
2045	7.69345
2050	7.30184
2055	6.92919
2060	6.64351
2065	6.45824
2070	6.33562
2075	6.23639
2080	6.12357
2085	6.01563
2090	5.9093
2095	5.84711
2100	5.80695