Year	Percent
1950	11.18508
1955	16.39642
1960	14.99357
1965	13.46069
1970	8.2541
1975	6.73606
1980	6.89449
1985	10.19028
1990	10.81296
1995	8.11833
2000	5.74038
2005	3.94593
2010	4.42632
2015	5.77681
2020	6.46175
2025	6.11675
2030	5.46768
2035	4.87681
2040	4.70547
2045	4.9368
2050	5.29351
2055	5.4954
2060	5.45583
2065	5.28875
2070	5.15816
2075	5.15245
2080	5.24114
2085	5.32889
2090	5.3338
2095	5.26004
2100	5.14477